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CVE-2025-20352

high · 7.7Actively exploited

On the CISA Known Exploited Vulnerabilities catalog

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

Added 2025-09-29Remediation due 2025-10-20

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.

7.7
CVSS
39.4%
EPSS (exploit prob.)
99th
EPSS percentile
2025-09-24
Published

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Weaknesses

CWE-121

Affected products

VendorProductAffected versions
ciscoios_xe_sd-wan16.9.1
ciscoios_xe_sd-wan16.9.2
ciscoios_xe_sd-wan16.9.3
ciscoios_xe_sd-wan16.9.4
ciscoios_xe_sd-wan16.10.1
ciscoios_xe_sd-wan16.10.2
ciscoios_xe_sd-wan16.10.3
ciscoios_xe_sd-wan16.10.3a
ciscoios_xe_sd-wan16.10.3b
ciscoios_xe_sd-wan16.10.4
ciscoios_xe_sd-wan16.10.5
ciscoios_xe_sd-wan16.10.6
ciscoios_xe_sd-wan16.11.1a
ciscoios_xe_sd-wan16.12.1b
ciscoios_xe_sd-wan16.12.1d
ciscoios_xe_sd-wan16.12.1e
ciscoios_xe_sd-wan16.12.2r
ciscoios_xe_sd-wan16.12.3
ciscoios_xe_sd-wan16.12.4
ciscoios_xe_sd-wan16.12.4a
ciscoios_xe_sd-wan16.12.5
ciscoios_xe3.5.0e
ciscoios_xe3.5.0sq
ciscoios_xe3.5.1e
ciscoios_xe3.5.1sq
ciscoios_xe3.5.2e
ciscoios_xe3.5.2sq
ciscoios_xe3.5.3e
ciscoios_xe3.5.3sq
ciscoios_xe3.5.4sq
ciscoios_xe3.5.5sq
ciscoios_xe3.5.6sq
ciscoios_xe3.5.7sq
ciscoios_xe3.5.8sq
ciscoios_xe3.6.0e
ciscoios_xe3.6.1e
ciscoios_xe3.6.2ae
ciscoios_xe3.6.2e
ciscoios_xe3.6.3e
ciscoios_xe3.6.4e

Check a specific version with /api/v1/cve/match.

References

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2025-20352