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CVE-2012-4617

22
FAUCET Score

CVE-2012-4617 describes a denial-of-service vulnerability in the BGP implementation of Cisco IOS, IOS XE, and IOS XR. Remote attackers can exploit this by sending a malformed BGP attribute to a peer, leading to multiple connection resets. With a CVSS score of 7.1, this vulnerability is considered high severity, requiring medium attack complexity but resulting in a complete loss of availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
15.2CPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.2:*:*:*:*:*:*:*
3.5.0sCPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:3.5.0s:*:*:*:*:*:*:*
3.5.1sCPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:3.5.1s:*:*:*:*:*:*:*
4.1CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:4.1:*:*:*:*:*:*:*
4.1.1CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:4.1.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.1HIGH

AV:N/AC:M/Au:N/C:N/I:N/A:C

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.32%
Probability of exploitation in next 30 days
EPSS Percentile
81.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0232 is in the 39th percentile among its peer group of 8,918 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20120926-bgp
Vendor Advisory
securityfocus.com / bid/55694
securitytracker.com / id