CVE-2025-20173

A vulnerability in the SNMP subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to cause a DoS condition on an affected device. This vulnerability is due to improper error handling when parsing SNMP requests. An attacker could exploit this vulnerability by sending a crafted SNMP request to an affected device. A successful exploit could allow the attacker to cause the device to reload unexpectedly, resulting in a DoS condition.  This vulnerability affects SNMP versions 1, 2c, and 3. To exploit this vulnerability through SNMP v2c or earlier, the attacker must know a valid read-write or read-only SNMP community string for the affected system. To exploit this vulnerability through SNMP v3, the attacker must have valid SNMP user credentials for the affected system.

Published: 2025-02-05 Last update: 2025-07-03 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-20173 is rated Moderate Risk (56.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.73%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-20173

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-09 0.95% 0.73% -0.22%
2 2026-05-09 0.31% 0.95% +0.64%
3 2026-03-16 — 0.31% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-20173

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.7 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.1 4.0 [email protected]

Weakness enumeration for CVE-2025-20173

Affected software / configurations for CVE-2025-20173

Vendor Product Version Raw CPE
cisco ios 12.2\(33\)sre cpe:2.3:o:cisco:ios:12.2\(33\)sre:*:*:*:*:*:*:*
cisco ios 12.2\(33\)sre0a cpe:2.3:o:cisco:ios:12.2\(33\)sre0a:*:*:*:*:*:*:*
cisco ios 12.2\(33\)sre1 cpe:2.3:o:cisco:ios:12.2\(33\)sre1:*:*:*:*:*:*:*
cisco ios 12.2\(33\)sre2 cpe:2.3:o:cisco:ios:12.2\(33\)sre2:*:*:*:*:*:*:*
cisco ios 12.2\(33\)sre3 cpe:2.3:o:cisco:ios:12.2\(33\)sre3:*:*:*:*:*:*:*
cisco ios 12.2\(33\)sre4 cpe:2.3:o:cisco:ios:12.2\(33\)sre4:*:*:*:*:*:*:*
cisco ios 12.2\(33\)sre5 cpe:2.3:o:cisco:ios:12.2\(33\)sre5:*:*:*:*:*:*:*
cisco ios 12.2\(33\)sre6 cpe:2.3:o:cisco:ios:12.2\(33\)sre6:*:*:*:*:*:*:*
cisco ios 12.2\(33\)sre7 cpe:2.3:o:cisco:ios:12.2\(33\)sre7:*:*:*:*:*:*:*
cisco ios 12.2\(33\)sre7a cpe:2.3:o:cisco:ios:12.2\(33\)sre7a:*:*:*:*:*:*:*
cisco ios 12.2\(33\)sre8 cpe:2.3:o:cisco:ios:12.2\(33\)sre8:*:*:*:*:*:*:*
cisco ios 12.2\(33\)sre9 cpe:2.3:o:cisco:ios:12.2\(33\)sre9:*:*:*:*:*:*:*
cisco ios 12.2\(33\)sre9a cpe:2.3:o:cisco:ios:12.2\(33\)sre9a:*:*:*:*:*:*:*
cisco ios 12.2\(33\)sre10 cpe:2.3:o:cisco:ios:12.2\(33\)sre10:*:*:*:*:*:*:*
cisco ios 12.2\(33\)sre11 cpe:2.3:o:cisco:ios:12.2\(33\)sre11:*:*:*:*:*:*:*
cisco ios 12.2\(33\)sre12 cpe:2.3:o:cisco:ios:12.2\(33\)sre12:*:*:*:*:*:*:*
cisco ios 12.2\(33\)sre13 cpe:2.3:o:cisco:ios:12.2\(33\)sre13:*:*:*:*:*:*:*
cisco ios 12.2\(33\)sre14 cpe:2.3:o:cisco:ios:12.2\(33\)sre14:*:*:*:*:*:*:*
cisco ios 12.2\(33\)sre15 cpe:2.3:o:cisco:ios:12.2\(33\)sre15:*:*:*:*:*:*:*
cisco ios 12.2\(33\)sre15a cpe:2.3:o:cisco:ios:12.2\(33\)sre15a:*:*:*:*:*:*:*
cisco ios 12.2\(46\)sg cpe:2.3:o:cisco:ios:12.2\(46\)sg:*:*:*:*:*:*:*
cisco ios 12.2\(46\)sg1 cpe:2.3:o:cisco:ios:12.2\(46\)sg1:*:*:*:*:*:*:*
cisco ios 12.2\(50\)se cpe:2.3:o:cisco:ios:12.2\(50\)se:*:*:*:*:*:*:*
cisco ios 12.2\(50\)se1 cpe:2.3:o:cisco:ios:12.2\(50\)se1:*:*:*:*:*:*:*
cisco ios 12.2\(50\)se2 cpe:2.3:o:cisco:ios:12.2\(50\)se2:*:*:*:*:*:*:*
cisco ios 12.2\(50\)se3 cpe:2.3:o:cisco:ios:12.2\(50\)se3:*:*:*:*:*:*:*
cisco ios 12.2\(50\)se4 cpe:2.3:o:cisco:ios:12.2\(50\)se4:*:*:*:*:*:*:*
cisco ios 12.2\(50\)se5 cpe:2.3:o:cisco:ios:12.2\(50\)se5:*:*:*:*:*:*:*
cisco ios 12.2\(50\)sg cpe:2.3:o:cisco:ios:12.2\(50\)sg:*:*:*:*:*:*:*
cisco ios 12.2\(50\)sg1 cpe:2.3:o:cisco:ios:12.2\(50\)sg1:*:*:*:*:*:*:*
cisco ios 12.2\(50\)sg2 cpe:2.3:o:cisco:ios:12.2\(50\)sg2:*:*:*:*:*:*:*
cisco ios 12.2\(50\)sg3 cpe:2.3:o:cisco:ios:12.2\(50\)sg3:*:*:*:*:*:*:*
cisco ios 12.2\(50\)sg4 cpe:2.3:o:cisco:ios:12.2\(50\)sg4:*:*:*:*:*:*:*
cisco ios 12.2\(50\)sg5 cpe:2.3:o:cisco:ios:12.2\(50\)sg5:*:*:*:*:*:*:*
cisco ios 12.2\(50\)sg6 cpe:2.3:o:cisco:ios:12.2\(50\)sg6:*:*:*:*:*:*:*
cisco ios 12.2\(50\)sg7 cpe:2.3:o:cisco:ios:12.2\(50\)sg7:*:*:*:*:*:*:*
cisco ios 12.2\(50\)sg8 cpe:2.3:o:cisco:ios:12.2\(50\)sg8:*:*:*:*:*:*:*
cisco ios 12.2\(50\)sq cpe:2.3:o:cisco:ios:12.2\(50\)sq:*:*:*:*:*:*:*
cisco ios 12.2\(50\)sq1 cpe:2.3:o:cisco:ios:12.2\(50\)sq1:*:*:*:*:*:*:*
cisco ios 12.2\(50\)sq2 cpe:2.3:o:cisco:ios:12.2\(50\)sq2:*:*:*:*:*:*:*
cisco ios 12.2\(50\)sq3 cpe:2.3:o:cisco:ios:12.2\(50\)sq3:*:*:*:*:*:*:*
cisco ios 12.2\(50\)sq4 cpe:2.3:o:cisco:ios:12.2\(50\)sq4:*:*:*:*:*:*:*
cisco ios 12.2\(50\)sq5 cpe:2.3:o:cisco:ios:12.2\(50\)sq5:*:*:*:*:*:*:*
cisco ios 12.2\(50\)sq6 cpe:2.3:o:cisco:ios:12.2\(50\)sq6:*:*:*:*:*:*:*
cisco ios 12.2\(50\)sq7 cpe:2.3:o:cisco:ios:12.2\(50\)sq7:*:*:*:*:*:*:*
cisco ios 12.2\(52\)ex cpe:2.3:o:cisco:ios:12.2\(52\)ex:*:*:*:*:*:*:*
cisco ios 12.2\(52\)ex1 cpe:2.3:o:cisco:ios:12.2\(52\)ex1:*:*:*:*:*:*:*
cisco ios 12.2\(52\)ey cpe:2.3:o:cisco:ios:12.2\(52\)ey:*:*:*:*:*:*:*
cisco ios 12.2\(52\)ey1 cpe:2.3:o:cisco:ios:12.2\(52\)ey1:*:*:*:*:*:*:*
cisco ios 12.2\(52\)ey1b cpe:2.3:o:cisco:ios:12.2\(52\)ey1b:*:*:*:*:*:*:*
cisco ios 12.2\(52\)ey1c cpe:2.3:o:cisco:ios:12.2\(52\)ey1c:*:*:*:*:*:*:*
cisco ios 12.2\(52\)ey2 cpe:2.3:o:cisco:ios:12.2\(52\)ey2:*:*:*:*:*:*:*
cisco ios 12.2\(52\)ey2a cpe:2.3:o:cisco:ios:12.2\(52\)ey2a:*:*:*:*:*:*:*
cisco ios 12.2\(52\)ey3 cpe:2.3:o:cisco:ios:12.2\(52\)ey3:*:*:*:*:*:*:*
cisco ios 12.2\(52\)ey3a cpe:2.3:o:cisco:ios:12.2\(52\)ey3a:*:*:*:*:*:*:*
cisco ios 12.2\(52\)ey4 cpe:2.3:o:cisco:ios:12.2\(52\)ey4:*:*:*:*:*:*:*
cisco ios 12.2\(52\)se cpe:2.3:o:cisco:ios:12.2\(52\)se:*:*:*:*:*:*:*
cisco ios 12.2\(52\)se1 cpe:2.3:o:cisco:ios:12.2\(52\)se1:*:*:*:*:*:*:*
cisco ios 12.2\(52\)sg cpe:2.3:o:cisco:ios:12.2\(52\)sg:*:*:*:*:*:*:*
cisco ios 12.2\(52\)xo cpe:2.3:o:cisco:ios:12.2\(52\)xo:*:*:*:*:*:*:*
cisco ios 12.2\(53\)ex cpe:2.3:o:cisco:ios:12.2\(53\)ex:*:*:*:*:*:*:*
cisco ios 12.2\(53\)ey cpe:2.3:o:cisco:ios:12.2\(53\)ey:*:*:*:*:*:*:*
cisco ios 12.2\(53\)ez cpe:2.3:o:cisco:ios:12.2\(53\)ez:*:*:*:*:*:*:*
cisco ios 12.2\(53\)se cpe:2.3:o:cisco:ios:12.2\(53\)se:*:*:*:*:*:*:*
cisco ios 12.2\(53\)se1 cpe:2.3:o:cisco:ios:12.2\(53\)se1:*:*:*:*:*:*:*
cisco ios 12.2\(53\)se2 cpe:2.3:o:cisco:ios:12.2\(53\)se2:*:*:*:*:*:*:*
cisco ios 12.2\(53\)sg cpe:2.3:o:cisco:ios:12.2\(53\)sg:*:*:*:*:*:*:*
cisco ios 12.2\(53\)sg1 cpe:2.3:o:cisco:ios:12.2\(53\)sg1:*:*:*:*:*:*:*
cisco ios 12.2\(53\)sg2 cpe:2.3:o:cisco:ios:12.2\(53\)sg2:*:*:*:*:*:*:*
cisco ios 12.2\(53\)sg3 cpe:2.3:o:cisco:ios:12.2\(53\)sg3:*:*:*:*:*:*:*
cisco ios 12.2\(53\)sg4 cpe:2.3:o:cisco:ios:12.2\(53\)sg4:*:*:*:*:*:*:*
cisco ios 12.2\(53\)sg5 cpe:2.3:o:cisco:ios:12.2\(53\)sg5:*:*:*:*:*:*:*
cisco ios 12.2\(53\)sg6 cpe:2.3:o:cisco:ios:12.2\(53\)sg6:*:*:*:*:*:*:*
cisco ios 12.2\(53\)sg7 cpe:2.3:o:cisco:ios:12.2\(53\)sg7:*:*:*:*:*:*:*
cisco ios 12.2\(53\)sg8 cpe:2.3:o:cisco:ios:12.2\(53\)sg8:*:*:*:*:*:*:*
cisco ios 12.2\(53\)sg9 cpe:2.3:o:cisco:ios:12.2\(53\)sg9:*:*:*:*:*:*:*
cisco ios 12.2\(53\)sg10 cpe:2.3:o:cisco:ios:12.2\(53\)sg10:*:*:*:*:*:*:*
cisco ios 12.2\(53\)sg11 cpe:2.3:o:cisco:ios:12.2\(53\)sg11:*:*:*:*:*:*:*
cisco ios 12.2\(54\)se cpe:2.3:o:cisco:ios:12.2\(54\)se:*:*:*:*:*:*:*
cisco ios 12.2\(54\)sg cpe:2.3:o:cisco:ios:12.2\(54\)sg:*:*:*:*:*:*:*

References for CVE-2025-20173

cvelogic Threat Intelligence