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CVE-2009-0631

20
FAUCET Score

CVE-2009-0631 describes an unspecified vulnerability in Cisco IOS versions 12.0 through 12.4, specifically when configured with IP SLAs Responder, SIP, H.323 Annex E, or MGCP. A remote attacker can exploit this flaw by sending a crafted UDP packet, leading to a denial of service by blocking the inbound interface's input queue. With a CVSS score of 7.8, this vulnerability is considered high severity due to its network-based attack vector, low attack complexity, and complete availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
12.0CPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.0:*:*:*:*:*:*:*
12.0daCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.0da:*:*:*:*:*:*:*
12.0dbCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.0db:*:*:*:*:*:*:*
12.0dcCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.0dc:*:*:*:*:*:*:*
12.0sCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.0s:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.8HIGH

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.92%
Probability of exploitation in next 30 days
EPSS Percentile
77.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0192 is in the 61st percentile among its peer group of 51,553 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Remediation records are not available for this CVE.

References

exchange.xforce.ibmcloud.com / vulnerabilities/49419
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6720
cisco.com / en/US/products/products_security_advisory09186a0080a90426.shtml
PatchVendor Advisory
cisco.com / en/US/products/products_security_advisory09186a0080a90469.shtml
PatchVendor Advisory
securityfocus.com / bid/34245
securitytracker.com / id