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CVE-2013-1302

41
FAUCET Score

CVE-2013-1302 is a critical remote code execution vulnerability affecting Microsoft Communicator 2007 R2, Lync 2010, Lync 2010 Attendee, and Lync Server 2013. The flaw stems from improper memory handling, allowing attackers to execute arbitrary code by sending a specially crafted invitation that triggers access to a deleted object. With a CVSS score of 9.3 and an EPSS score indicating a higher exploitability probability than 97.5% of all CVEs, this vulnerability poses a significant risk. Despite its high severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:lync:2010:*:attendee:*:*:*:*:*
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:lync:2010:*:x64:*:*:*:*:*
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:lync:2010:*:x86:*:*:*:*:*
2013CPE matchmatch criteria
cpe:2.3:a:microsoft:lync_server:2013:*:*:*:*:*:*:*
2007CPE matchmatch criteria
cpe:2.3:a:microsoft:office_communicator:2007:r2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
21.91%
Probability of exploitation in next 30 days
EPSS Percentile
97.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.2191 is in the 88th percentile among its peer group of 8,914 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 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

docs.microsoft.com / en-us/security-updates/securitybulletins/2013/ms13-041
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15952
us-cert.gov / ncas/alerts/TA13-134A
Third Party AdvisoryUS Government Resource