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CVE-2010-2840· NVD / CVE Program· CNA cisco

The Presence Engine (PE) service in Cisco Unified Presence 6.x before 6.0(7) and 7.x before 7.0(8) does not properly handle an erroneous Con

The Presence Engine (PE) service in Cisco Unified Presence 6.x before 6.0(7) and 7.x before 7.0(8) does not properly handle an erroneous Contact field in the header of a SIP SUBSCRIBE message, which allows remote attackers to cause a denial of service (process failure) via a malformed message, aka Bug ID CSCtd39629.

HighCVSS 7.8 · v2.0—No exploit No fix recorded
Published
Aug 26, 2010
Updated
Jun 16, 2026
EPSS
1.2% · 67th percentile
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JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.2%

Affected systems

VendorProduct
ciscounified presence server

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • cisco unified presence server6.0
  • cisco unified presence server6.0.5.1102-1
  • cisco unified presence server6.0(2.1101)
  • cisco unified presence server6.0(2)
  • cisco unified presence server6.0(3.1101-2)
  • cisco unified presence server6.0(3)
  • cisco unified presence server6.0(4.1101-5)
  • cisco unified presence server6.0(4)
  • cisco unified presence server6.0(5.1101-1)
  • cisco unified presence server6.0(5.1103-2)
  • cisco unified presence server6.0(5)
  • cisco unified presence server6.0(6)
  • cisco unified presence server7.0
  • cisco unified presence server7.0.3.10102-3
  • cisco unified presence server7.0.3.10103-2
  • cisco unified presence server7.0.4.10101-2
  • cisco unified presence server7.0(2)
  • cisco unified presence server7.0(3)
  • cisco unified presence server7.0(4)
  • cisco unified presence server7.0(5)

Same product

cisco: all records

Other highest-scoring records for the same primary product.

  • CVE-2013-1137Cisco Unified Presence Server (CUPS) 8.6, 9.0, and 9.1 before 9.1.1 allows remote attackers to cause a denial of service (CPU consumption) v
    32Monitor
  • CVE-2009-2874The TimesTenD process in Cisco Unified Presence 1.x, 6.x before 6.0(6), and 7.x before 7.0(4) allows remote attackers to cause a denial of s
    32Monitor
  • CVE-2010-2839SIPD in Cisco Unified Presence 6.x before 6.0(7) and 7.x before 7.0(8) allows remote attackers to cause a denial of service (stack memory co
    31Monitor
  • CVE-2013-6983SQL injection vulnerability in the web interface in Cisco Unified Presence Server allows remote authenticated users to execute arbitrary SQL
    27Monitor
  • CVE-2014-3328The Intercluster Sync Agent Service in Cisco Unified Presence Server allows remote attackers to cause a denial of service via a TCP SYN floo
    21Monitor
  • CVE-2013-1242Memory leak in the web framework in the server in Cisco Unified Presence (CUP) allows remote attackers to cause a denial of service (memory
    20Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
C · the service can be disrupted
Attack complexity
Low
Confidentiality impact
None
Integrity impact
None
Availability impact
C

Weakness class (CWE)

CWE-20 · Improper Input Validation

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records