CVE-2025-20352

Cisco — Cisco IOS and IOS XE Software SNMP Denial of Service and Remote Code Execution Vulnerability

Cisco · CWE-121 — Stack-based buffer overflow · in CISA KEV since 2025-09-29

KEV since 2025 · listed over a yearCISA KEVActively Exploited

EVRS 75 of 100 Urgent

Patch This Cycle

Rank 765 of 2,960 tracked

Raised to the floor for a confirmed exploited vulnerability.

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Why it scores 75

Evidence available: 6 of 7 signals

Listed in the CISA KEV catalog, and an EPSS probability of 0.415.

CISA KEVApplied
RansomwareDid not apply
Vendor exploitationDid not apply
EPSSApplied
Microsoft Exploitability IndexNot applicable
Pre-patch disclosureNo data
KEV recencyDid not apply
CVSSApplied

The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data

Fix

No fixed version identified yet

CISA required action

Affected versions

ios xe sd-wan16.9.116.9.216.9.316.9.416.10.116.10.216.10.316.10.3a16.10.3b16.10.416.10.516.10.616.11.1a16.12.1b16.12.1d16.12.1e16.12.2r16.12.316.12.416.12.4a16.12.5
ios xe3.5.0e3.5.0sq3.5.1e3.5.1sq3.5.2e3.5.2sq3.5.3e3.5.3sq3.5.4sq3.5.5sq3.5.6sq3.5.7sq3.5.8sq3.6.0e3.6.1e3.6.2ae3.6.2e3.6.3e3.6.4e3.6.5ae3.6.5e3.6.6e3.6.7be3.6.7e3.6.8e3.6.9e3.6.10e3.7.0e3.7.1e3.7.2e3.7.3e3.7.4e3.7.5e3.8.0e3.8.1e3.8.2e3.8.3e3.8.4e3.8.5ae3.8.5e3.8.6e3.8.7e3.8.8e3.8.9e3.8.10e3.9.0e3.9.1e3.9.2e3.10.0ce3.10.0e3.10.1e3.10.2e3.10.3e3.11.0e3.11.1ae3.11.1e3.11.2e3.11.3ae3.11.3e3.11.4e3.11.5e3.11.6e3.11.7e3.11.8e3.11.9e3.11.10e3.11.11e3.11.12e3.14.0s3.14.1s3.14.2s3.14.3s3.14.4s3.15.0s3.15.1cs3.15.1s3.15.2s3.15.3s3.15.4s3.16.0cs3.16.0s3.16.1as3.16.1s3.16.2as3.16.2bs3.16.2s3.16.3as3.16.3s3.16.4as3.16.4bs3.16.4ds3.16.4s3.16.5s3.16.6bs3.16.6s3.16.7as3.16.7bs3.16.7s3.16.8s3.16.9s3.16.10s3.17.0s3.17.1as3.17.1s3.17.2s3.17.3s3.17.4s3.18.0as3.18.0s3.18.0sp3.18.1asp3.18.1bsp3.18.1csp3.18.1s3.18.1sp3.18.2asp3.18.2s3.18.2sp3.18.3asp3.18.3bsp3.18.3s3.18.3sp3.18.4s3.18.4sp3.18.5sp3.18.6sp3.18.7sp3.18.8asp3.18.9sp16.6.116.6.216.6.316.6.416.6.4a16.6.516.6.5a16.6.616.6.716.6.816.6.916.6.1016.7.116.7.1a16.7.1b16.7.216.7.316.7.416.8.116.8.1a16.8.1b16.8.1c16.8.1d16.8.1e16.8.1s16.8.216.8.316.9.116.9.1a16.9.1b16.9.1s16.9.216.9.316.9.3a16.9.416.9.516.9.5f16.9.616.9.716.9.816.10.116.10.1a16.10.1b16.10.1c16.10.1d16.10.1e16.10.1f16.10.1g16.10.1s16.10.216.10.316.11.116.11.1a16.11.1b16.11.1s16.11.216.12.116.12.1a16.12.1c16.12.1s16.12.1t16.12.1w16.12.1x16.12.1y16.12.1z116.12.1z216.12.216.12.2a16.12.2s16.12.316.12.3a16.12.3s16.12.416.12.4a16.12.516.12.5a16.12.5b16.12.616.12.6a16.12.716.12.816.12.916.12.1016.12.10a16.12.1116.12.1216.12.1317.1.117.1.1a17.1.1s17.1.1t17.1.317.2.117.2.1a17.2.1r17.2.1v17.2.217.2.317.3.117.3.1a17.3.1w17.3.1x17.3.1z17.3.217.3.2a17.3.317.3.417.3.4a17.3.4b17.3.4c17.3.517.3.5a17.3.5b17.3.617.3.717.3.817.3.8a17.4.117.4.1a17.4.1b17.4.217.4.2a17.5.117.5.1a17.6.117.6.1a17.6.1w17.6.1x17.6.1y17.6.1z17.6.1z117.6.217.6.317.6.3a17.6.417.6.517.6.5a17.6.617.6.6a17.6.717.6.817.6.8a17.7.117.7.1a17.7.1b17.7.217.8.117.8.1a17.9.117.9.1a17.9.1w17.9.1x17.9.1x117.9.1y17.9.1y117.9.217.9.2a17.9.317.9.3a17.9.417.9.4a17.9.517.9.5a17.9.5b17.9.5e17.9.5f17.9.617.9.6a17.9.717.9.7a17.9.7b17.10.117.10.1a17.10.1b17.11.117.11.1a17.12.117.12.1a17.12.1w17.12.1x17.12.1y17.12.1z17.12.1z117.12.1z217.12.1z317.12.1z417.12.217.12.2a17.12.317.12.3a17.12.417.12.4a17.12.4b17.12.517.12.5a17.12.5b17.12.5c17.13.117.13.1a17.14.117.14.1a17.15.117.15.1a17.15.1b17.15.1w17.15.1x17.15.1y17.15.1z17.15.217.15.2a17.15.2b17.15.2c17.15.317.15.3a17.15.3b17.15.417.16.117.16.1a17.17.117.18.1
ios12.2\(33\)sxi12.2\(33\)sxi112.2\(33\)sxi212.2\(33\)sxi2a12.2\(33\)sxi312.2\(33\)sxi412.2\(33\)sxi4a12.2\(33\)sxi512.2\(33\)sxi612.2\(33\)sxi712.2\(33\)sxi812.2\(33\)sxi8a12.2\(33\)sxi912.2\(33\)sxi1012.2\(33\)sxi1112.2\(33\)sxi1212.2\(33\)sxi1312.2\(33\)sxi1412.2\(33\)sxj12.2\(33\)sxj112.2\(33\)sxj212.2\(33\)sxj312.2\(33\)sxj412.2\(33\)sxj512.2\(33\)sxj612.2\(33\)sxj712.2\(33\)sxj812.2\(33\)sxj912.2\(33\)sxj1012.2\(50\)sq12.2\(50\)sq112.2\(50\)sq212.2\(50\)sq312.2\(50\)sq412.2\(50\)sq512.2\(50\)sq612.2\(50\)sq712.2\(53\)ez12.2\(55\)ez12.2\(55\)se12.2\(55\)se112.2\(55\)se212.2\(55\)se312.2\(55\)se412.2\(55\)se512.2\(55\)se612.2\(55\)se712.2\(55\)se812.2\(55\)se912.2\(55\)se1012.2\(55\)se1112.2\(55\)se1212.2\(55\)se1312.2\(58\)ez12.2\(58\)se12.2\(58\)se112.2\(58\)se212.2\(60\)ez12.2\(60\)ez112.2\(60\)ez212.2\(60\)ez312.2\(60\)ez412.2\(60\)ez512.2\(60\)ez612.2\(60\)ez712.2\(60\)ez812.2\(60\)ez912.2\(60\)ez1012.2\(60\)ez1112.2\(60\)ez1212.2\(60\)ez1312.2\(60\)ez1412.2\(60\)ez1515.0\(1\)ey15.0\(1\)ey115.0\(1\)ey215.0\(1\)se15.0\(1\)se115.0\(1\)se215.0\(1\)se315.0\(1\)sy15.0\(1\)sy115.0\(1\)sy215.0\(1\)sy315.0\(1\)sy415.0\(1\)sy515.0\(1\)sy615.0\(1\)sy715.0\(1\)sy7a15.0\(1\)sy815.0\(1\)sy915.0\(1\)sy1015.0\(2\)ea15.0\(2\)ea115.0\(2\)ej15.0\(2\)ej115.0\(2\)ek15.0\(2\)ek115.0\(2\)ey15.0\(2\)ey115.0\(2\)ey215.0\(2\)ey315.0\(2\)se15.0\(2\)se115.0\(2\)se215.0\(2\)se315.0\(2\)se415.0\(2\)se515.0\(2\)se615.0\(2\)se715.0\(2\)se815.0\(2\)se915.0\(2\)se1015.0\(2\)se10a15.0\(2\)se1115.0\(2\)se1215.0\(2\)se1315.0\(2\)sg15.0\(2\)sg115.0\(2\)sg215.0\(2\)sg315.0\(2\)sg415.0\(2\)sg515.0\(2\)sg615.0\(2\)sg715.0\(2\)sg815.0\(2\)sg915.0\(2\)sg1015.0\(2\)sg1115.0\(2\)sqd15.0\(2\)sqd115.0\(2\)sqd215.0\(2\)sqd315.0\(2\)sqd415.0\(2\)sqd515.0\(2\)sqd615.0\(2\)sqd715.0\(2\)sqd815.1\(1\)sg15.1\(1\)sg115.1\(1\)sg215.1\(1\)sy15.1\(1\)sy115.1\(1\)sy215.1\(1\)sy315.1\(1\)sy415.1\(1\)sy515.1\(1\)sy615.1\(2\)sg15.1\(2\)sg115.1\(2\)sg215.1\(2\)sg315.1\(2\)sg415.1\(2\)sg515.1\(2\)sg615.1\(2\)sg715.1\(2\)sg815.1\(2\)sy15.1\(2\)sy115.1\(2\)sy215.1\(2\)sy315.1\(2\)sy415.1\(2\)sy4a15.1\(2\)sy515.1\(2\)sy615.1\(2\)sy715.1\(2\)sy815.1\(2\)sy915.1\(2\)sy1015.1\(2\)sy1115.1\(2\)sy1215.1\(2\)sy1315.1\(2\)sy1415.1\(2\)sy1515.1\(2\)sy1615.2\(1\)e15.2\(1\)e115.2\(1\)e215.2\(1\)e315.2\(1\)ey15.2\(1\)sy15.2\(1\)sy0a15.2\(1\)sy115.2\(1\)sy1a15.2\(1\)sy215.2\(1\)sy315.2\(1\)sy415.2\(1\)sy515.2\(1\)sy615.2\(1\)sy715.2\(1\)sy815.2\(2\)e15.2\(2\)e115.2\(2\)e215.2\(2\)e315.2\(2\)e415.2\(2\)e515.2\(2\)e5a15.2\(2\)e5b15.2\(2\)e615.2\(2\)e715.2\(2\)e815.2\(2\)e915.2\(2\)e1015.2\(2\)ea15.2\(2\)ea115.2\(2\)ea215.2\(2\)ea315.2\(2\)gc15.2\(2\)jax15.2\(2\)jb15.2\(2\)jb215.2\(2\)jb315.2\(2\)jb415.2\(2\)jb515.2\(2\)jb615.2\(2\)sy15.2\(2\)sy115.2\(2\)sy215.2\(2\)sy315.2\(2a\)e115.2\(2a\)e215.2\(3\)e15.2\(3\)e115.2\(3\)e215.2\(3\)e315.2\(3\)e415.2\(3\)ea15.2\(3\)gc15.2\(3\)gc115.2\(3a\)e15.2\(4\)e15.2\(4\)e115.2\(4\)e215.2\(4\)e315.2\(4\)e415.2\(4\)e515.2\(4\)e615.2\(4\)e715.2\(4\)e815.2\(4\)e915.2\(4\)e1015.2\(4\)e10a15.2\(4\)e10d15.2\(4\)ea15.2\(4\)ea115.2\(4\)ea315.2\(4\)ea415.2\(4\)ea515.2\(4\)ea615.2\(4\)ea715.2\(4\)ea815.2\(4\)ea915.2\(4\)ea9a15.2\(4\)ec115.2\(4\)ec215.2\(4\)gc15.2\(4\)gc115.2\(4\)gc215.2\(4\)gc315.2\(4\)jb15.2\(4\)jb115.2\(4\)jb215.2\(4\)jb315.2\(4\)jb3a15.2\(4\)jb3b15.2\(4\)jb3h15.2\(4\)jb415.2\(4\)jb515.2\(4\)jb615.2\(4\)jn15.2\(4\)m15.2\(4\)m115.2\(4\)m215.2\(4\)m315.2\(4\)m415.2\(4\)m515.2\(4\)m615.2\(4\)m6a15.2\(4\)m715.2\(4\)m815.2\(4\)m915.2\(4\)m1015.2\(4\)m1115.2\(5\)e15.2\(5\)e115.2\(5\)e215.2\(5\)e2c15.2\(5\)ea15.2\(5\)ex15.2\(5a\)e15.2\(5a\)e115.2\(5b\)e15.2\(5c\)e15.2\(6\)e15.2\(6\)e0a15.2\(6\)e0c15.2\(6\)e115.2\(6\)e215.2\(6\)e2a15.2\(6\)e2b15.2\(6\)e315.2\(7\)e15.2\(7\)e0a15.2\(7\)e0b15.2\(7\)e0s15.2\(7\)e115.2\(7\)e1a15.2\(7\)e215.2\(7\)e2a15.2\(7\)e315.2\(7\)e3k15.2\(7\)e415.2\(7\)e515.2\(7\)e615.2\(7\)e715.2\(7\)e815.2\(7\)e915.2\(7\)e1015.2\(7\)e1115.2\(7\)e1215.2\(7a\)e0b15.2\(7b\)e0b15.2\(8\)e15.2\(8\)e115.2\(8\)e215.2\(8\)e315.2\(8\)e415.2\(8\)e515.2\(8\)e615.2\(8\)e715.3\(1\)sy15.3\(1\)sy115.3\(1\)sy215.3\(1\)t15.3\(1\)t115.3\(1\)t215.3\(1\)t315.3\(1\)t415.3\(2\)t15.3\(2\)t115.3\(2\)t215.3\(2\)t315.3\(2\)t415.3\(3\)ja115.3\(3\)ja1m15.3\(3\)ja415.3\(3\)ja515.3\(3\)ja615.3\(3\)ja715.3\(3\)ja815.3\(3\)ja1015.3\(3\)ja1115.3\(3\)ja1215.3\(3\)jaa15.3\(3\)jaa1115.3\(3\)jaa1215.3\(3\)jab15.3\(3\)jax15.3\(3\)jax115.3\(3\)jax215.3\(3\)jb15.3\(3\)jbb15.3\(3\)jbb115.3\(3\)jbb215.3\(3\)jbb415.3\(3\)jbb515.3\(3\)jbb615.3\(3\)jbb6a15.3\(3\)jbb815.3\(3\)jc15.3\(3\)jc115.3\(3\)jc215.3\(3\)jc315.3\(3\)jc415.3\(3\)jc515.3\(3\)jc615.3\(3\)jc815.3\(3\)jc915.3\(3\)jc1415.3\(3\)jca715.3\(3\)jca815.3\(3\)jca915.3\(3\)jd15.3\(3\)jd215.3\(3\)jd315.3\(3\)jd415.3\(3\)jd515.3\(3\)jd615.3\(3\)jd715.3\(3\)jd815.3\(3\)jd915.3\(3\)jd1115.3\(3\)jd1315.3\(3\)jd1415.3\(3\)jd1615.3\(3\)jd1715.3\(3\)jda715.3\(3\)jda815.3\(3\)jda915.3\(3\)jda1115.3\(3\)jda1315.3\(3\)jda1415.3\(3\)jda1615.3\(3\)jda1715.3\(3\)je15.3\(3\)jf15.3\(3\)jf115.3\(3\)jf215.3\(3\)jf415.3\(3\)jf515.3\(3\)jf615.3\(3\)jf715.3\(3\)jf815.3\(3\)jf915.3\(3\)jf1015.3\(3\)jf1115.3\(3\)jf1215.3\(3\)jf12i15.3\(3\)jf1415.3\(3\)jf14i15.3\(3\)jf1515.3\(3\)jg15.3\(3\)jg115.3\(3\)jh15.3\(3\)jh115.3\(3\)ji115.3\(3\)ji315.3\(3\)ji415.3\(3\)ji515.3\(3\)ji615.3\(3\)jj15.3\(3\)jj115.3\(3\)jk15.3\(3\)jk115.3\(3\)jk1t15.3\(3\)jk215.3\(3\)jk2a15.3\(3\)jk315.3\(3\)jk415.3\(3\)jk515.3\(3\)jk615.3\(3\)jk715.3\(3\)jk815.3\(3\)jk8a15.3\(3\)jk8b15.3\(3\)jk915.3\(3\)jk1015.3\(3\)jk1115.3\(3\)jn315.3\(3\)jn415.3\(3\)jn715.3\(3\)jn815.3\(3\)jn915.3\(3\)jnb15.3\(3\)jnb115.3\(3\)jnb215.3\(3\)jnb315.3\(3\)jnb415.3\(3\)jnb515.3\(3\)jnb615.3\(3\)jnc15.3\(3\)jnc115.3\(3\)jnc415.3\(3\)jnd15.3\(3\)jnd115.3\(3\)jnd215.3\(3\)jnd315.3\(3\)jnp15.3\(3\)jnp115.3\(3\)jnp315.3\(3\)jpb15.3\(3\)jpb115.3\(3\)jpc15.3\(3\)jpc115.3\(3\)jpc215.3\(3\)jpc315.3\(3\)jpc515.3\(3\)jpd15.3\(3\)jpi115.3\(3\)jpi1t15.3\(3\)jpi415.3\(3\)jpi515.3\(3\)jpi6a15.3\(3\)jpi715.3\(3\)jpi8a15.3\(3\)jpi915.3\(3\)jpi1015.3\(3\)jpj215.3\(3\)jpj2t15.3\(3\)jpj315.3\(3\)jpj3a15.3\(3\)jpj415.3\(3\)jpj515.3\(3\)jpj615.3\(3\)jpj715.3\(3\)jpj7c15.3\(3\)jpj8a15.3\(3\)jpj915.3\(3\)jpj1015.3\(3\)jpj1115.3\(3\)jpk15.3\(3\)jpk115.3\(3\)jpk215.3\(3\)jpk315.3\(3\)jpk415.3\(3\)jpk515.3\(3\)jpk615.3\(3\)jpk715.3\(3\)jpk815.3\(3\)jpk915.3\(3\)jpl15.3\(3\)jpm15.3\(3\)jpn15.3\(3\)jpn115.3\(3\)jpn215.3\(3\)jpn315.3\(3\)jpn415.3\(3\)jpn515.3\(3\)jpn615.3\(3\)jpo15.3\(3\)jpp15.3\(3\)jpq15.3\(3\)jpq115.3\(3\)jpq215.3\(3\)jpq315.3\(3\)jpq415.3\(3\)jpq515.3\(3\)jpr15.3\(3\)jps15.3\(3\)jpt15.3\(3\)jpt115.3\(3\)jpt215.3\(3\)m15.3\(3\)m115.3\(3\)m215.3\(3\)m315.3\(3\)m415.3\(3\)m515.3\(3\)m615.3\(3\)m715.3\(3\)m815.3\(3\)m8a15.3\(3\)m915.3\(3\)m1015.4\(1\)cg15.4\(1\)cg115.4\(1\)sy15.4\(1\)sy115.4\(1\)sy215.4\(1\)sy315.4\(1\)sy415.4\(1\)t15.4\(1\)t115.4\(1\)t215.4\(1\)t315.4\(1\)t415.4\(2\)cg15.4\(2\)t15.4\(2\)t115.4\(2\)t215.4\(2\)t315.4\(2\)t415.5\(1\)s15.5\(1\)s115.5\(1\)s215.5\(1\)s315.5\(1\)s415.5\(1\)sy15.5\(1\)sy115.5\(1\)sy215.5\(1\)sy315.5\(1\)sy415.5\(1\)sy515.5\(1\)sy615.5\(1\)sy715.5\(1\)sy815.5\(1\)sy915.5\(1\)sy1015.5\(1\)sy1115.5\(1\)sy1215.5\(1\)sy1315.5\(1\)sy1415.5\(1\)sy1515.5\(1\)t15.5\(1\)t115.5\(1\)t215.5\(1\)t315.5\(1\)t415.5\(2\)s15.5\(2\)s115.5\(2\)s215.5\(2\)s315.5\(2\)s415.5\(2\)t15.5\(2\)t115.5\(2\)t215.5\(2\)t315.5\(2\)t415.5\(3\)m15.5\(3\)m0a15.5\(3\)m115.5\(3\)m215.5\(3\)m315.5\(3\)m415.5\(3\)m4a15.5\(3\)m515.5\(3\)m615.5\(3\)m6a15.5\(3\)m715.5\(3\)m815.5\(3\)m915.5\(3\)m1015.5\(3\)s15.5\(3\)s0a15.5\(3\)s115.5\(3\)s1a15.5\(3\)s215.5\(3\)s315.5\(3\)s415.5\(3\)s515.5\(3\)s615.5\(3\)s6a15.5\(3\)s6b15.5\(3\)s715.5\(3\)s815.5\(3\)s915.5\(3\)s9a15.5\(3\)s1015.5\(3\)sn15.6\(1\)s15.6\(1\)s115.6\(1\)s215.6\(1\)s315.6\(1\)s415.6\(1\)t15.6\(1\)t0a15.6\(1\)t115.6\(1\)t215.6\(1\)t315.6\(2\)s15.6\(2\)s115.6\(2\)s215.6\(2\)s315.6\(2\)s415.6\(2\)sn15.6\(2\)sp15.6\(2\)sp115.6\(2\)sp215.6\(2\)sp315.6\(2\)sp415.6\(2\)sp515.6\(2\)sp615.6\(2\)sp715.6\(2\)sp815.6\(2\)sp915.6\(2\)t15.6\(2\)t115.6\(2\)t215.6\(2\)t315.6\(3\)m15.6\(3\)m0a15.6\(3\)m115.6\(3\)m1b15.6\(3\)m215.6\(3\)m2a15.6\(3\)m315.6\(3\)m3a15.6\(3\)m415.6\(3\)m515.6\(3\)m615.6\(3\)m6a15.6\(3\)m6b15.6\(3\)m715.6\(3\)m815.6\(3\)m915.7\(3\)m15.7\(3\)m0a15.7\(3\)m115.7\(3\)m215.7\(3\)m315.7\(3\)m415.7\(3\)m4a15.7\(3\)m4b15.7\(3\)m515.7\(3\)m615.7\(3\)m715.7\(3\)m815.7\(3\)m915.8\(3\)m15.8\(3\)m0a15.8\(3\)m0b15.8\(3\)m115.8\(3\)m1a15.8\(3\)m215.8\(3\)m2a15.8\(3\)m315.8\(3\)m3a15.8\(3\)m3b15.8\(3\)m415.8\(3\)m515.8\(3\)m615.8\(3\)m715.8\(3\)m815.8\(3\)m915.9\(3\)m15.9\(3\)m0a15.9\(3\)m115.9\(3\)m215.9\(3\)m2a15.9\(3\)m315.9\(3\)m3a15.9\(3\)m3b15.9\(3\)m415.9\(3\)m4a15.9\(3\)m515.9\(3\)m615.9\(3\)m6a15.9\(3\)m6b15.9\(3\)m715.9\(3\)m7a15.9\(3\)m815.9\(3\)m8b15.9\(3\)m915.9\(3\)m1015.9\(3\)m11

Remediation

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Evidence

Each value with its source

Measure	Value	Source
CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is.	7.7	NVD
FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs.	0.415 (98.7th pctl)	FIRST EPSS
Actively exploitedWhether a source of record has confirmed attacks using it in the wild.	Confirmed	CISA KEV
Ransomware campaign useWhether CISA has seen ransomware operators use it.	Unknown or none	CISA KEV
CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it.	2025-10-20 · KEV since 2025 · listed over a year	CISA KEV
Public exploit moduleA module existing is not the same as active exploitation.	None known	Metasploit
EUVD cross-referenceENISA's record: CVSS 7.7 (v3.1), assigned by cisco.	Listed	ENISA EUVD

Description

NVD

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.

What CISA says to do