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CVE-2012-4091

19
FAUCET Score

CVE-2012-4091 describes a denial-of-service vulnerability in the RIP service engine of Cisco NX-OS, affecting Cisco NX-OS products. An unauthenticated remote attacker can trigger an engine restart by sending a malformed RIPv4 or RIPv6 message. The vulnerability has a CVSS score of 5.0, indicating a medium severity. It requires no authentication and has low attack complexity, but only impacts availability. There is no evidence of active exploitation, nor are there public exploit modules available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:cisco:nx-os:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.00%
Probability of exploitation in next 30 days
EPSS Percentile
85.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0300 is in the 80th percentile among its peer group of 23,690 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

osvdb.org / 98124
exchange.xforce.ibmcloud.com / vulnerabilities/87669
tools.cisco.com / security/center/content/CiscoSecurityNotice/CVE-2012-4091
Vendor Advisory
securityfocus.com / bid/62838
Third Party AdvisoryVDB Entry
securitytracker.com / id/1029159
Third Party AdvisoryVDB Entry