CVE Alert: CVE-2025-20352 – Cisco – IOS
CVE-2025-20352
HIGHExploitation active
A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco IOS Software and Cisco IOS XE Software could allow the following: An authenticated, remote attacker with low privileges could cause a denial of service (DoS) condition on an affected device that is running Cisco IOS Software or Cisco IOS XE Software. To cause the DoS, the attacker must have the SNMPv2c or earlier read-only community string or valid SNMPv3 user credentials. An authenticated, remote attacker with high privileges could execute code as the root user on an affected device that is running Cisco IOS XE Software. To execute code as the root user, the attacker must have the SNMPv1 or v2c read-only community string or valid SNMPv3 user credentials and administrative or privilege 15 credentials on the affected device. An attacker could exploit this vulnerability by sending a crafted SNMP packet to an affected device over IPv4 or IPv6 networks. This vulnerability is due to a stack overflow condition in the SNMP subsystem of the affected software. A successful exploit could allow a low-privileged attacker to cause the affected system to reload, resulting in a DoS condition, or allow a high-privileged attacker to execute arbitrary code as the root user and obtain full control of the affected system. Note: This vulnerability affects all versions of SNMP.
CVSS v3.1 (7.7)
AV NETWORK · AC LOW · PR LOW · UI NONE · S CHANGED
Vendor
Cisco, Cisco, Cisco
Product
IOS, Cisco IOS XE Software, Cisco IOS XE Catalyst SD-WAN
Versions
12.2(55)SE | 12.2(55)SE3 | 12.2(55)SE2 | 12.2(58)SE | 12.2(55)SE1 | 12.2(58)SE1 | 12.2(55)SE4 | 12.2(58)SE2 | 12.2(55)SE5 | 12.2(55)SE6 | 12.2(55)SE7 | 12.2(55)SE8 | 12.2(55)SE9 | 12.2(55)SE10 | 12.2(55)SE11 | 12.2(55)SE12 | 12.2(55)SE13 | 12.2(58)EZ | 12.2(53)EZ | 12.2(55)EZ | 12.2(60)EZ | 12.2(60)EZ1 | 12.2(60)EZ2 | 12.2(60)EZ3 | 12.2(60)EZ4 | 12.2(60)EZ5 | 12.2(60)EZ6 | 12.2(60)EZ7 | 12.2(60)EZ8 | 12.2(60)EZ9 | 12.2(60)EZ10 | 12.2(60)EZ11 | 12.2(60)EZ12 | 12.2(60)EZ13 | 12.2(60)EZ14 | 12.2(60)EZ15 | 12.2(33)SXI2 | 12.2(33)SXI3 | 12.2(33)SXI5 | 12.2(33)SXI4a | 12.2(33)SXI4 | 12.2(33)SXI2a | 12.2(33)SXI | 12.2(33)SXI6 | 12.2(33)SXI7 | 12.2(33)SXI1 | 12.2(33)SXI8 | 12.2(33)SXI9 | 12.2(33)SXI8a | 12.2(33)SXI10 | 12.2(33)SXI11 | 12.2(33)SXI12 | 12.2(33)SXI13 | 12.2(33)SXI14 | 12.2(50)SQ2 | 12.2(50)SQ1 | 12.2(50)SQ | 12.2(50)SQ3 | 12.2(50)SQ4 | 12.2(50)SQ5 | 12.2(50)SQ6 | 12.2(50)SQ7 | 15.3(1)T | 15.3(2)T | 15.3(1)T1 | 15.3(1)T2 | 15.3(1)T3 | 15.3(1)T4 | 15.3(2)T1 | 15.3(2)T2 | 15.3(2)T3 | 15.3(2)T4 | 15.0(1)EY | 15.0(1)EY1 | 15.0(1)EY2 | 15.0(2)EY | 15.0(2)EY1 | 15.0(2)EY2 | 15.0(2)EY3 | 15.0(1)SE | 15.0(2)SE | 15.0(1)SE1 | 15.0(1)SE2 | 15.0(1)SE3 | 15.0(2)SE1 | 15.0(2)SE2 | 15.0(2)SE3 | 15.0(2)SE4 | 15.0(2)SE5 | 15.0(2)SE6 | 15.0(2)SE7 | 15.0(2)SE8 | 15.0(2)SE9 | 15.0(2)SE10 | 15.0(2)SE11 | 15.0(2)SE10a | 15.0(2)SE12 | 15.0(2)SE13 | 15.0(1)SY | 15.0(1)SY1 | 15.0(1)SY2 | 15.0(1)SY3 | 15.0(1)SY4 | 15.0(1)SY5 | 15.0(1)SY6 | 15.0(1)SY7 | 15.0(1)SY8 | 15.0(1)SY7a | 15.0(1)SY9 | 15.0(1)SY10 | 12.2(33)SXJ | 12.2(33)SXJ1 | 12.2(33)SXJ2 | 12.2(33)SXJ3 | 12.2(33)SXJ4 | 12.2(33)SXJ5 | 12.2(33)SXJ6 | 12.2(33)SXJ7 | 12.2(33)SXJ8 | 12.2(33)SXJ9 | 12.2(33)SXJ10 | 15.1(1)SG | 15.1(2)SG | 15.1(1)SG1 | 15.1(1)SG2 | 15.1(2)SG1 | 15.1(2)SG2 | 15.1(2)SG3 | 15.1(2)SG4 | 15.1(2)SG5 | 15.1(2)SG6 | 15.1(2)SG7 | 15.1(2)SG8 | 15.2(4)M | 15.2(4)M1 | 15.2(4)M2 | 15.2(4)M4 | 15.2(4)M3 | 15.2(4)M5 | 15.2(4)M8 | 15.2(4)M10 | 15.2(4)M7 | 15.2(4)M6 | 15.2(4)M9 | 15.2(4)M6a | 15.2(4)M11 | 15.0(2)SG | 15.0(2)SG1 | 15.0(2)SG2 | 15.0(2)SG3 | 15.0(2)SG4 | 15.0(2)SG5 | 15.0(2)SG6 | 15.0(2)SG7 | 15.0(2)SG8 | 15.0(2)SG9 | 15.0(2)SG10 | 15.0(2)SG11 | 15.2(2)GC | 15.2(3)GC | 15.2(3)GC1 | 15.2(4)GC | 15.2(4)GC1 | 15.2(4)GC2 | 15.2(4)GC3 | 15.1(1)SY | 15.1(1)SY1 | 15.1(2)SY | 15.1(2)SY1 | 15.1(2)SY2 | 15.1(1)SY2 | 15.1(1)SY3 | 15.1(2)SY3 | 15.1(1)SY4 | 15.1(2)SY4 | 15.1(1)SY5 | 15.1(2)SY5 | 15.1(2)SY4a | 15.1(1)SY6 | 15.1(2)SY6 | 15.1(2)SY7 | 15.1(2)SY8 | 15.1(2)SY9 | 15.1(2)SY10 | 15.1(2)SY11 | 15.1(2)SY12 | 15.1(2)SY13 | 15.1(2)SY14 | 15.1(2)SY15 | 15.1(2)SY16 | 15.4(1)T | 15.4(2)T | 15.4(1)T2 | 15.4(1)T1 | 15.4(1)T3 | 15.4(2)T1 | 15.4(2)T3 | 15.4(2)T2 | 15.4(1)T4 | 15.4(2)T4 | 15.0(2)EA | 15.0(2)EA1 | 15.2(1)E | 15.2(2)E | 15.2(1)E1 | 15.2(3)E | 15.2(1)E2 | 15.2(1)E3 | 15.2(2)E1 | 15.2(4)E | 15.2(3)E1 | 15.2(2)E2 | 15.2(2a)E1 | 15.2(2)E3 | 15.2(2a)E2 | 15.2(3)E2 | 15.2(3a)E | 15.2(3)E3 | 15.2(4)E1 | 15.2(2)E4 | 15.2(2)E5 | 15.2(4)E2 | 15.2(3)E4 | 15.2(5)E | 15.2(4)E3 | 15.2(2)E6 | 15.2(5a)E | 15.2(5)E1 | 15.2(5b)E | 15.2(2)E5a | 15.2(5c)E | 15.2(2)E5b | 15.2(5a)E1 | 15.2(4)E4 | 15.2(2)E7 | 15.2(5)E2 | 15.2(6)E | 15.2(4)E5 | 15.2(5)E2c | 15.2(2)E8 | 15.2(6)E0a | 15.2(6)E1 | 15.2(6)E0c | 15.2(4)E6 | 15.2(6)E2 | 15.2(2)E9 | 15.2(4)E7 | 15.2(7)E | 15.2(2)E10 | 15.2(4)E8 | 15.2(6)E2a | 15.2(6)E2b | 15.2(7)E1 | 15.2(7)E0a | 15.2(7)E0b | 15.2(7)E0s | 15.2(6)E3 | 15.2(4)E9 | 15.2(7)E2 | 15.2(7a)E0b | 15.2(4)E10 | 15.2(7)E3 | 15.2(7)E1a | 15.2(7b)E0b | 15.2(7)E2a | 15.2(4)E10a | 15.2(7)E4 | 15.2(7)E3k | 15.2(8)E | 15.2(8)E1 | 15.2(7)E5 | 15.2(7)E6 | 15.2(8)E2 | 15.2(4)E10d | 15.2(7)E7 | 15.2(8)E3 | 15.2(7)E8 | 15.2(8)E4 | 15.2(7)E9 | 15.2(8)E5 | 15.2(8)E6 | 15.2(7)E10 | 15.2(7)E11 | 15.2(8)E7 | 15.2(7)E12 | 15.2(2)JB | 15.2(2)JB2 | 15.2(4)JB | 15.2(2)JB3 | 15.2(4)JB1 | 15.2(4)JB2 | 15.2(4)JB3 | 15.2(4)JB3a | 15.2(2)JB4 | 15.2(4)JB4 | 15.2(4)JB3h | 15.2(4)JB3b | 15.2(4)JB5 | 15.2(4)JB6 | 15.2(2)JB5 | 15.2(2)JB6 | 15.2(2)JAX | 15.3(3)M | 15.3(3)M1 | 15.3(3)M2 | 15.3(3)M3 | 15.3(3)M5 | 15.3(3)M4 | 15.3(3)M6 | 15.3(3)M7 | 15.3(3)M8 | 15.3(3)M9 | 15.3(3)M10 | 15.3(3)M8a | 15.2(4)JN | 15.2(1)EY | 15.0(2)EJ | 15.0(2)EJ1 | 15.2(1)SY | 15.2(1)SY1 | 15.2(1)SY0a | 15.2(1)SY2 | 15.2(2)SY | 15.2(1)SY1a | 15.2(2)SY1 | 15.2(2)SY2 | 15.2(1)SY3 | 15.2(1)SY4 | 15.2(2)SY3 | 15.2(1)SY5 | 15.2(1)SY6 | 15.2(1)SY7 | 15.2(1)SY8 | 15.2(5)EX | 15.0(2)EK | 15.0(2)EK1 | 15.4(1)CG | 15.4(1)CG1 | 15.4(2)CG | 15.5(1)S | 15.5(2)S | 15.5(1)S1 | 15.5(3)S | 15.5(1)S2 | 15.5(1)S3 | 15.5(2)S1 | 15.5(2)S2 | 15.5(3)S1 | 15.5(3)S1a | 15.5(2)S3 | 15.5(3)S2 | 15.5(3)S0a | 15.5(3)S3 | 15.5(1)S4 | 15.5(2)S4 | 15.5(3)S4 | 15.5(3)S5 | 15.5(3)S6 | 15.5(3)S6a | 15.5(3)S7 | 15.5(3)S6b | 15.5(3)S8 | 15.5(3)S9 | 15.5(3)S10 | 15.5(3)S9a | 15.5(1)T | 15.5(1)T1 | 15.5(2)T | 15.5(1)T2 | 15.5(1)T3 | 15.5(2)T1 | 15.5(2)T2 | 15.5(2)T3 | 15.5(2)T4 | 15.5(1)T4 | 15.2(2)EA | 15.2(2)EA1 | 15.2(2)EA2 | 15.2(3)EA | 15.2(4)EA | 15.2(4)EA1 | 15.2(2)EA3 | 15.2(4)EA3 | 15.2(5)EA | 15.2(4)EA4 | 15.2(4)EA5 | 15.2(4)EA6 | 15.2(4)EA7 | 15.2(4)EA8 | 15.2(4)EA9 | 15.2(4)EA9a | 15.3(3)JN3 | 15.3(3)JN4 | 15.3(3)JN7 | 15.3(3)JN8 | 15.3(3)JN9 | 15.5(3)M | 15.5(3)M1 | 15.5(3)M0a | 15.5(3)M2 | 15.5(3)M3 | 15.5(3)M4 | 15.5(3)M4a | 15.5(3)M5 | 15.5(3)M6 | 15.5(3)M7 | 15.5(3)M6a | 15.5(3)M8 | 15.5(3)M9 | 15.5(3)M10 | 15.3(3)JA1m | 15.3(3)JA1 | 15.3(3)JA4 | 15.3(3)JA5 | 15.3(3)JA6 | 15.3(3)JA7 | 15.3(3)JA8 | 15.3(3)JA10 | 15.3(3)JA11 | 15.3(3)JA12 | 15.3(3)JAA | 15.3(3)JAA11 | 15.3(3)JAA12 | 15.3(3)JAB | 15.3(3)JB | 15.5(3)SN | 15.0(2)SQD | 15.0(2)SQD1 | 15.0(2)SQD2 | 15.0(2)SQD3 | 15.0(2)SQD4 | 15.0(2)SQD5 | 15.0(2)SQD6 | 15.0(2)SQD7 | 15.0(2)SQD8 | 15.6(1)S | 15.6(2)S | 15.6(2)S1 | 15.6(1)S1 | 15.6(1)S2 | 15.6(2)S2 | 15.6(1)S3 | 15.6(2)S3 | 15.6(1)S4 | 15.6(2)S4 | 15.6(1)T | 15.6(2)T | 15.6(1)T0a | 15.6(1)T1 | 15.6(2)T1 | 15.6(1)T2 | 15.6(2)T2 | 15.6(1)T3 | 15.6(2)T3 | 15.3(3)JNB | 15.3(3)JNB1 | 15.3(3)JNB2 | 15.3(3)JNB3 | 15.3(3)JNB4 | 15.3(3)JNB6 | 15.3(3)JNB5 | 15.3(3)JAX | 15.3(3)JAX1 | 15.3(3)JAX2 | 15.3(3)JBB | 15.3(3)JBB1 | 15.3(3)JBB2 | 15.3(3)JBB4 | 15.3(3)JBB5 | 15.3(3)JBB6 | 15.3(3)JBB8 | 15.3(3)JBB6a | 15.3(3)JC | 15.3(3)JC1 | 15.3(3)JC2 | 15.3(3)JC3 | 15.3(3)JC4 | 15.3(3)JC5 | 15.3(3)JC6 | 15.3(3)JC8 | 15.3(3)JC9 | 15.3(3)JC14 | 15.3(1)SY | 15.3(1)SY1 | 15.3(1)SY2 | 15.3(3)JNC | 15.3(3)JNC1 | 15.3(3)JNC4 | 15.3(3)JNP | 15.3(3)JNP1 | 15.3(3)JNP3 | 15.6(2)SP | 15.6(2)SP1 | 15.6(2)SP2 | 15.6(2)SP3 | 15.6(2)SP4 | 15.6(2)SP5 | 15.6(2)SP6 | 15.6(2)SP7 | 15.6(2)SP8 | 15.6(2)SP9 | 15.6(2)SN | 15.3(3)JPB | 15.3(3)JPB1 | 15.3(3)JD | 15.3(3)JD2 | 15.3(3)JD3 | 15.3(3)JD4 | 15.3(3)JD5 | 15.3(3)JD6 | 15.3(3)JD7 | 15.3(3)JD8 | 15.3(3)JD9 | 15.3(3)JD11 | 15.3(3)JD13 | 15.3(3)JD14 | 15.3(3)JD16 | 15.3(3)JD17 | 15.6(3)M | 15.6(3)M1 | 15.6(3)M0a | 15.6(3)M1b | 15.6(3)M2 | 15.6(3)M2a | 15.6(3)M3 | 15.6(3)M3a | 15.6(3)M4 | 15.6(3)M5 | 15.6(3)M6 | 15.6(3)M7 | 15.6(3)M6a | 15.6(3)M6b | 15.6(3)M8 | 15.6(3)M9 | 15.2(4)EC1 | 15.2(4)EC2 | 15.3(3)JPC | 15.3(3)JPC1 | 15.3(3)JPC2 | 15.3(3)JPC3 | 15.3(3)JPC5 | 15.3(3)JND | 15.3(3)JND1 | 15.3(3)JND2 | 15.3(3)JND3 | 15.4(1)SY | 15.4(1)SY1 | 15.4(1)SY2 | 15.4(1)SY3 | 15.4(1)SY4 | 15.3(3)JE | 15.3(3)JPD | 15.3(3)JDA7 | 15.3(3)JDA8 | 15.3(3)JDA9 | 15.3(3)JDA11 | 15.3(3)JDA13 | 15.3(3)JDA14 | 15.3(3)JDA16 | 15.3(3)JDA17 | 15.5(1)SY | 15.5(1)SY1 | 15.5(1)SY2 | 15.5(1)SY3 | 15.5(1)SY4 | 15.5(1)SY5 | 15.5(1)SY6 | 15.5(1)SY7 | 15.5(1)SY8 | 15.5(1)SY9 | 15.5(1)SY10 | 15.5(1)SY11 | 15.5(1)SY12 | 15.5(1)SY13 | 15.5(1)SY14 | 15.5(1)SY15 | 15.3(3)JF | 15.3(3)JF1 | 15.3(3)JF2 | 15.3(3)JF4 | 15.3(3)JF5 | 15.3(3)JF6 | 15.3(3)JF7 | 15.3(3)JF8 | 15.3(3)JF9 | 15.3(3)JF10 | 15.3(3)JF11 | 15.3(3)JF12 | 15.3(3)JF12i | 15.3(3)JF14 | 15.3(3)JF14i | 15.3(3)JF15 | 15.3(3)JCA7 | 15.3(3)JCA8 | 15.3(3)JCA9 | 15.7(3)M | 15.7(3)M1 | 15.7(3)M0a | 15.7(3)M3 | 15.7(3)M2 | 15.7(3)M4 | 15.7(3)M5 | 15.7(3)M4a | 15.7(3)M4b | 15.7(3)M6 | 15.7(3)M7 | 15.7(3)M8 | 15.7(3)M9 | 15.3(3)JG | 15.3(3)JG1 | 15.3(3)JH | 15.3(3)JH1 | 15.3(3)JI1 | 15.3(3)JI3 | 15.3(3)JI4 | 15.3(3)JI5 | 15.3(3)JI6 | 15.8(3)M | 15.8(3)M1 | 15.8(3)M0a | 15.8(3)M0b | 15.8(3)M2 | 15.8(3)M1a | 15.8(3)M3 | 15.8(3)M2a | 15.8(3)M4 | 15.8(3)M3a | 15.8(3)M3b | 15.8(3)M5 | 15.8(3)M6 | 15.8(3)M7 | 15.8(3)M8 | 15.8(3)M9 | 15.9(3)M | 15.9(3)M1 | 15.9(3)M0a | 15.9(3)M2 | 15.9(3)M3 | 15.9(3)M2a | 15.9(3)M3a | 15.9(3)M4 | 15.9(3)M3b | 15.9(3)M5 | 15.9(3)M4a | 15.9(3)M6 | 15.9(3)M7 | 15.9(3)M6a | 15.9(3)M6b | 15.9(3)M8 | 15.9(3)M7a | 15.9(3)M9 | 15.9(3)M8b | 15.9(3)M10 | 15.9(3)M11 | 15.3(3)JK | 15.3(3)JK1 | 15.3(3)JK2 | 15.3(3)JK3 | 15.3(3)JK2a | 15.3(3)JK1t | 15.3(3)JK4 | 15.3(3)JK5 | 15.3(3)JK6 | 15.3(3)JK7 | 15.3(3)JK8 | 15.3(3)JK8a | 15.3(3)JK8b | 15.3(3)JK9 | 15.3(3)JK10 | 15.3(3)JK11 | 15.3(3)JJ | 15.3(3)JJ1 | 15.3(3)JPI1 | 15.3(3)JPI4 | 15.3(3)JPI1t | 15.3(3)JPI5 | 15.3(3)JPI7 | 15.3(3)JPI6a | 15.3(3)JPI8a | 15.3(3)JPI9 | 15.3(3)JPI10 | 15.3(3)JPJ2 | 15.3(3)JPJ3 | 15.3(3)JPJ2t | 15.3(3)JPJ3a | 15.3(3)JPJ4 | 15.3(3)JPJ5 | 15.3(3)JPJ6 | 15.3(3)JPJ7 | 15.3(3)JPJ7c | 15.3(3)JPJ8a | 15.3(3)JPJ9 | 15.3(3)JPJ10 | 15.3(3)JPJ11 | 15.3(3)JPK | 15.3(3)JPK1 | 15.3(3)JPK2 | 15.3(3)JPK3 | 15.3(3)JPK4 | 15.3(3)JPK5 | 15.3(3)JPK6 | 15.3(3)JPK7 | 15.3(3)JPK8 | 15.3(3)JPK9 | 15.3(3)JPL | 15.3(3)JPM | 15.3(3)JPN | 15.3(3)JPN1 | 15.3(3)JPN2 | 15.3(3)JPN3 | 15.3(3)JPN4 | 15.3(3)JPN5 | 15.3(3)JPN6 | 15.3(3)JPO | 15.3(3)JPP | 15.3(3)JPQ | 15.3(3)JPQ1 | 15.3(3)JPQ2 | 15.3(3)JPQ3 | 15.3(3)JPQ4 | 15.3(3)JPQ5 | 15.3(3)JPR | 15.3(3)JPS | 15.3(3)JPT | 15.3(3)JPT1 | 15.3(3)JPT2 | 3.5.0E | 3.5.1E | 3.5.2E | 3.5.3E | 3.6.0E | 3.6.1E | 3.6.2aE | 3.6.2E | 3.6.3E | 3.6.4E | 3.6.5E | 3.6.6E | 3.6.5aE | 3.6.7E | 3.6.8E | 3.6.7bE | 3.6.9E | 3.6.10E | 3.14.0S | 3.14.1S | 3.14.2S | 3.14.3S | 3.14.4S | 3.15.0S | 3.15.1S | 3.15.2S | 3.15.1cS | 3.15.3S | 3.15.4S | 3.7.0E | 3.7.1E | 3.7.2E | 3.7.3E | 3.7.4E | 3.7.5E | 3.5.0SQ | 3.5.1SQ | 3.5.2SQ | 3.5.3SQ | 3.5.4SQ | 3.5.5SQ | 3.5.6SQ | 3.5.7SQ | 3.5.8SQ | 3.16.0S | 3.16.1S | 3.16.1aS | 3.16.2S | 3.16.2aS | 3.16.0cS | 3.16.3S | 3.16.2bS | 3.16.3aS | 3.16.4S | 3.16.4aS | 3.16.4bS | 3.16.5S | 3.16.4dS | 3.16.6S | 3.16.7S | 3.16.6bS | 3.16.7aS | 3.16.7bS | 3.16.8S | 3.16.9S | 3.16.10S | 3.17.0S | 3.17.1S | 3.17.2S | 3.17.1aS | 3.17.3S | 3.17.4S | 3.8.0E | 3.8.1E | 3.8.2E | 3.8.3E | 3.8.4E | 3.8.5E | 3.8.5aE | 3.8.6E | 3.8.7E | 3.8.8E | 3.8.9E | 3.8.10E | 3.18.0aS | 3.18.0S | 3.18.1S | 3.18.2S | 3.18.3S | 3.18.4S | 3.18.0SP | 3.18.1SP | 3.18.1aSP | 3.18.1bSP | 3.18.1cSP | 3.18.2SP | 3.18.2aSP | 3.18.3SP | 3.18.4SP | 3.18.3aSP | 3.18.3bSP | 3.18.5SP | 3.18.6SP | 3.18.7SP | 3.18.8aSP | 3.18.9SP | 3.9.0E | 3.9.1E | 3.9.2E | 16.6.1 | 16.6.2 | 16.6.3 | 16.6.4 | 16.6.5 | 16.6.4a | 16.6.5a | 16.6.6 | 16.6.7 | 16.6.8 | 16.6.9 | 16.6.10 | 16.7.1 | 16.7.1a | 16.7.1b | 16.7.2 | 16.7.3 | 16.7.4 | 16.8.1 | 16.8.1a | 16.8.1b | 16.8.1s | 16.8.1c | 16.8.1d | 16.8.2 | 16.8.1e | 16.8.3 | 16.9.1 | 16.9.2 | 16.9.1a | 16.9.1b | 16.9.1s | 16.9.3 | 16.9.4 | 16.9.3a | 16.9.5 | 16.9.5f | 16.9.6 | 16.9.7 | 16.9.8 | 16.10.1 | 16.10.1a | 16.10.1b | 16.10.1s | 16.10.1c | 16.10.1e | 16.10.1d | 16.10.2 | 16.10.1f | 16.10.1g | 16.10.3 | 3.10.0E | 3.10.1E | 3.10.0cE | 3.10.2E | 3.10.3E | 16.11.1 | 16.11.1a | 16.11.1b | 16.11.2 | 16.11.1s | 16.12.1 | 16.12.1s | 16.12.1a | 16.12.1c | 16.12.1w | 16.12.2 | 16.12.1y | 16.12.2a | 16.12.3 | 16.12.8 | 16.12.2s | 16.12.1x | 16.12.1t | 16.12.4 | 16.12.3s | 16.12.3a | 16.12.4a | 16.12.5 | 16.12.6 | 16.12.1z1 | 16.12.5a | 16.12.5b | 16.12.1z2 | 16.12.6a | 16.12.7 | 16.12.9 | 16.12.10 | 16.12.10a | 16.12.11 | 16.12.12 | 16.12.13 | 3.11.0E | 3.11.1E | 3.11.2E | 3.11.3E | 3.11.1aE | 3.11.4E | 3.11.3aE | 3.11.5E | 3.11.6E | 3.11.7E | 3.11.8E | 3.11.9E | 3.11.10E | 3.11.11E | 3.11.12E | 17.1.1 | 17.1.1a | 17.1.1s | 17.1.1t | 17.1.3 | 17.2.1 | 17.2.1r | 17.2.1a | 17.2.1v | 17.2.2 | 17.2.3 | 17.3.1 | 17.3.2 | 17.3.3 | 17.3.1a | 17.3.1w | 17.3.2a | 17.3.1x | 17.3.1z | 17.3.4 | 17.3.5 | 17.3.4a | 17.3.6 | 17.3.4b | 17.3.4c | 17.3.5a | 17.3.5b | 17.3.7 | 17.3.8 | 17.3.8a | 17.4.1 | 17.4.2 | 17.4.1a | 17.4.1b | 17.4.2a | 17.5.1 | 17.5.1a | 17.6.1 | 17.6.2 | 17.6.1w | 17.6.1a | 17.6.1x | 17.6.3 | 17.6.1y | 17.6.1z | 17.6.3a | 17.6.4 | 17.6.1z1 | 17.6.5 | 17.6.6 | 17.6.6a | 17.6.5a | 17.6.7 | 17.6.8 | 17.6.8a | 17.7.1 | 17.7.1a | 17.7.1b | 17.7.2 | 17.10.1 | 17.10.1a | 17.10.1b | 17.8.1 | 17.8.1a | 17.9.1 | 17.9.1w | 17.9.2 | 17.9.1a | 17.9.1x | 17.9.1y | 17.9.3 | 17.9.2a | 17.9.1×1 | 17.9.3a | 17.9.4 | 17.9.1y1 | 17.9.5 | 17.9.4a | 17.9.5a | 17.9.5b | 17.9.6 | 17.9.6a | 17.9.7 | 17.9.5e | 17.9.5f | 17.9.7a | 17.9.7b | 17.11.1 | 17.11.1a | 17.12.1 | 17.12.1w | 17.12.1a | 17.12.1x | 17.12.2 | 17.12.3 | 17.12.2a | 17.12.1y | 17.12.1z | 17.12.4 | 17.12.3a | 17.12.1z1 | 17.12.1z2 | 17.12.4a | 17.12.5 | 17.12.4b | 17.12.1z3 | 17.12.5a | 17.12.1z4 | 17.12.5b | 17.12.5c | 17.13.1 | 17.13.1a | 17.14.1 | 17.14.1a | 17.15.1 | 17.15.1w | 17.15.1a | 17.15.2 | 17.15.1b | 17.15.1x | 17.15.1z | 17.15.3 | 17.15.2c | 17.15.2a | 17.15.1y | 17.15.2b | 17.15.3a | 17.15.4 | 17.15.3b | 17.16.1 | 17.16.1a | 17.17.1 | 17.18.1 | 16.9.1 | 16.9.2 | 16.9.3 | 16.9.4 | 16.10.1 | 16.10.2 | 16.10.3 | 16.10.3a | 16.10.3b | 16.10.4 | 16.10.5 | 16.10.6 | 16.11.1a | 16.12.1b | 16.12.1d | 16.12.1e | 16.12.2r | 16.12.3 | 16.12.4 | 16.12.4a | 16.12.5
CWE
CWE-121, Stack-based Buffer Overflow
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Published
2025-09-24T17:10:42.891Z
Updated
2025-09-27T03:55:24.371Z
References
AI Summary Analysis
Risk verdict
Critical exposure with active exploitation in the wild; treat as priority 1 and patch immediately.
Why this matters
An authenticated SNMP vulnerability can cause a device reload (DoS) at low cost to the attacker, or full root code execution with high privileges. In practice, this could enable rapid, remote takeovers of network devices, leading to downtime, degraded management visibility, and potential lateral movement within the network if SNMP is widely trusted.
Most likely attack path
An attacker uses SNMP with valid credentials to induce a stack overflow, triggering either a reload or arbitrary code execution. With low-privilege SNMP access, DoS is possible; with privileged credentials, root compromise is feasible and scope can extend to other network elements. Pre-conditions are remote SNMP access (v1/v2c/v3) and valid credentials; post-exploit could allow persistence and broader control of the device and adjacent systems.
Who is most exposed
Most at-risk are organisations with SNMP enabled on Cisco devices exposed to reachable networks or poorly segmented management VLANs, especially where SNMPv1/v2c credentials or weak SNMPv3 configurations exist.
Detection ideas
- Unusual or high-volume SNMP traffic from untrusted sources to affected devices
- Sudden device reloads or crash events following SNMP activity
- Authentication failures and privilege-escalation attempts in SNMP logs
- UnexpectedROOT or privileged processes appearing after SNMP interactions
- Correlated alerts of credential compromise and SNMP activity
Mitigation and prioritisation
- Patch to fixed Cisco IOS/IOS XE releases immediately; treat as priority 1 (due to KEV and active exploitation)
- If patching now isn’t possible, implement strict SNMP access controls (ACLs) limiting to trusted management networks
- Disable SNMPv1/v2c where feasible; migrate to SNMPv3 with strong authPriv and rotated credentials
- Segment management networks and enforce least privilege for SNMP read/write operations
- Validate and harden SNMP configurations; conduct change-management with testing and staged rollout
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