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CVE-2010-2838

23
FAUCET Score

CVE-2010-2838 describes a denial-of-service vulnerability in Cisco Unified Communications Manager (CUCM) versions 7.0SU, 7.1, and 8.0, where a malformed SIP REGISTER message can cause a process failure. With a CVSS score of 7.8, this vulnerability is considered highly severe, allowing unauthenticated remote attackers to disrupt service with low attack complexity. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the potential for a complete denial of service makes it a significant concern for affected systems.

Impacted Technologies

VendorProductVersion(s)CPE
<= 7.0\(2a\)su2CPE matchmatch criteria
cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:*:*:*:*
7.0\(1\)su1CPE matchmatch criteria
cpe:2.3:a:cisco:unified_communications_manager:7.0\(1\)su1:*:*:*:*:*:*:*
7.0\(1\)su1aCPE matchmatch criteria
cpe:2.3:a:cisco:unified_communications_manager:7.0\(1\)su1a:*:*:*:*:*:*:*
7.0\(2\)CPE matchmatch criteria
cpe:2.3:a:cisco:unified_communications_manager:7.0\(2\):*:*:*:*:*:*:*
7.0\(2a\)CPE matchmatch criteria
cpe:2.3:a:cisco:unified_communications_manager:7.0\(2a\):*:*:*:*:*:*:*

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
1.21%
Probability of exploitation in next 30 days
EPSS Percentile
65.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0121 is in the 44th percentile among its peer group of 51,551 CVEs.

Social Chatter

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

cisco.com / en/US/products/products_security_advisory09186a0080b43908.shtml
PatchVendor Advisory
vupen.com / english/advisories/2010/2187