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CVE-2009-2870

20
FAUCET Score

CVE-2009-2870 describes an unspecified denial-of-service vulnerability affecting Cisco IOS versions 12.2 through 12.4 when the Cisco Unified Border Element feature is enabled. Remote attackers can exploit this flaw by sending crafted SIP messages, leading to a device reload. 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, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
12.3ykCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.3yk:*:*:*:*:*:*:*
12.3ysCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.3ys:*:*:*:*:*:*:*
12.3ytCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.3yt:*:*:*:*:*:*:*
12.4gcCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.4gc:*:*:*:*:*:*:*
12.4mrCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.4mr:*:*:*:*:*:*:*

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
2.52%
Probability of exploitation in next 30 days
EPSS Percentile
83.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0252 is in the 70th 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

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

tools.cisco.com / security/center/viewAlert.x
Vendor Advisory
cisco.com / en/US/products/products_security_advisory09186a0080af811b.shtml
Vendor Advisory
securitytracker.com / id
vupen.com / english/advisories/2009/2759