CVE-2007-2931
CriticalPublic exploitHeap-based buffer overflow in Microsoft MSN Messenger 6.2, 7.0, and 7.5, and Live Messenger 8.0 allows user-assisted remote attackers to execute arbitrary code via unspecified vectors involving video conversation handling in Web Cam and video chat sessions.
Published Aug 31, 2007 · Updated Apr 22, 2026
Key Facts
Patch immediately- CVE-2007-2931 is a critical-severity vulnerability (CVSS 9.3 v2) affecting Msn Messenger (Microsoft), Windows Live Messenger (Microsoft).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 55% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v2
9.3
AV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS (30-day exploit likelihood)
55%
Higher than 99.0% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
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Description
Heap-based buffer overflow in Microsoft MSN Messenger 6.2, 7.0, and 7.5, and Live Messenger 8.0 allows user-assisted remote attackers to execute arbitrary code via unspecified vectors involving video conversation handling in Web Cam and video chat sessions.
Affected Products
4 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Msn MessengerMicrosoft | 6.2, 7.0, 7.5 | n/a |
| Windows Live MessengerMicrosoft | 8.0 | n/a |
Timeline
Publicly disclosed
Aug 31, 2007
Last updated
Apr 22, 2026
Weakness Type
- CWE-20 Improper Input Validation
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
- advisory26570
- advisoryADV-2007-2987
- exploitExploitDB-30537
- exploitExploitDB-4334
- exploit25461
FAQ
Common Questions.
Heap-based buffer overflow in Microsoft MSN Messenger 6.2, 7.0, and 7.5, and Live Messenger 8.0 allows user-assisted remote attackers to execute arbitrary code via unspecified vectors involving video conversation handling in Web Cam and video chat sessions.
Affected: Msn Messenger (Microsoft) versions 6.2, 7.0, 7.5; Windows Live Messenger (Microsoft) versions 8.0. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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