CVE-2025-20352
Act now ● On CISA KEV — actively exploited
Actively exploited — on the CISA KEV list.
CVSS base
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EPSS — probability of exploitation (30 days)
39.4%
98.5th percentile
CISA KEV
Listed
Added 2025-09-29 · patch by 2025-10-20
Weakness / dates
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Published — · modified —
Timeline
- 2025-09-29 — Added to CISA KEV (actively exploited)
- 2025-10-20 — CISA patch-by deadline
Description
Cisco IOS and IOS XE contains a stack-based buffer overflow vulnerability in the Simple Network Management Protocol (SNMP) subsystem that could allow for denial of service or remote code execution. 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.