CVE-2012-3918

Cisco IOS before 15.3(1)T on Cisco 2900 devices, when a VWIC2-2MFT-T1/E1 card is configured for TDM/HDLC mode, allows remote attackers to cause a denial of service (serial-interface outage) via certain Frame Relay traffic, aka Bug ID CSCub13317.

Published: 2014-04-23 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-3918 is rated Low Risk (39.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.08%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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-2012-3918

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 2026-06-15 0.44% 1.08% +0.64%
2 2025-03-30 0.49% 0.44% -0.04%
3 2025-03-29 — 0.49% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-3918

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2012-3918

Affected software / configurations for CVE-2012-3918

Vendor Product Version Raw CPE
cisco ios <= 15.3\(3\)m2 cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
cisco ios 15.3 cpe:2.3:o:cisco:ios:15.3:*:*:*:*:*:*:*
cisco ios 15.3\(2\)s cpe:2.3:o:cisco:ios:15.3\(2\)s:*:*:*:*:*:*:*
cisco ios 15.3\(3\)m cpe:2.3:o:cisco:ios:15.3\(3\)m:*:*:*:*:*:*:*
cisco ios 15.3\(3\)m1 cpe:2.3:o:cisco:ios:15.3\(3\)m1:*:*:*:*:*:*:*
cisco ios 15.3\(3\)s cpe:2.3:o:cisco:ios:15.3\(3\)s:*:*:*:*:*:*:*
cisco ios 15.3s cpe:2.3:o:cisco:ios:15.3s:*:*:*:*:*:*:*
cisco catalyst_2900 — cpe:2.3:h:cisco:catalyst_2900:*:*:*:*:*:*:*:*
cisco catalyst_2900 lre_xl cpe:2.3:h:cisco:catalyst_2900:lre_xl:*:*:*:*:*:*:*
cisco catalyst_2900 xl cpe:2.3:h:cisco:catalyst_2900:xl:*:*:*:*:*:*:*
cisco catalyst_2900_vlan — cpe:2.3:h:cisco:catalyst_2900_vlan:*:*:*:*:*:*:*:*
cisco catalyst_2900xl — cpe:2.3:h:cisco:catalyst_2900xl:*:*:*:*:*:*:*:*

References for CVE-2012-3918

cvelogic Threat Intelligence