CVE-2012-3918

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2014-04-23 · updated 2026-06-16

Description

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.

Affected products

Cisco Catalyst 2900: lre_xl, xl
Cisco Catalyst 2900 Vlan: all versions
Cisco Catalyst 2900Xl: all versions
Cisco IOS: through 15.3\(3\)m2; 15.3, 15.3(2)s, 15.3(3)m, 15.3(3)m1, 15.3(3)s, 15.3s

References

http://www.cisco.com/c/en/us/td/docs/ios/15_3m_and_t/release/notes/15_3m_and_t.pdf
http://www.cisco.com/c/en/us/td/docs/ios/15_3m_and_t/release/notes/15_3m_and_t.pdf

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