CVE-2007-3147Messenger Memory Corruption
Buffer overflow in the Yahoo!
Published Jun 11, 2007 · Updated Apr 22, 2026
Key Facts
Patch immediately- CVE-2007-3147 is a critical-severity vulnerability (CVSS 9.3 v2) affecting Messenger (Yahoo).
- It is exploited in the wild, listed in Industry KEV feed since May 1, 2010. Public exploit code is available.
- EPSS estimates a 40% 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 listed as exploited in the wild.
Scores
CVSS v2
9.3
AV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS (30-day exploit likelihood)
40%
Higher than 98.6% of all scored CVEs
Exploit maturity
Weaponized
ATLAS score
60/100
Publication score, see How it works
Exploitation Verdict
KEV listed
May 1, 2010
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Weaponized
Public exploit code
3
Proof-of-concept links
In-the-wild evidence
3
Reports of active use
Advisories And Exploit References
Description
Buffer overflow in the Yahoo! Webcam Upload ActiveX control in ywcupl.dll 2.0.1.4 for Yahoo! Messenger 8.1.0.249 allows remote attackers to execute arbitrary code via a long server property value to the send method. NOTE: some of these details are obtained from third party information.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | May 1, 2010 | n/a | Not reported |
Affected Products
6 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| MessengerYahoo | 2.0.1.4, 8.0, 8.0.0.863, 8.0.1, 8.0_2005.1.1.4, 8.1.0.249 | n/a |
Timeline
Publicly disclosed
Jun 11, 2007
Added to Industry KEV feed
May 1, 2010
Last updated
Apr 22, 2026
Weakness Type
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
- advisoryresearch.eeye.com · AD20070608.html
- advisoryresearch.eeye.com · 20070605.html
- patchmessenger.yahoo.com · security_update.php
- patch25547
- exploit20070606 Yahoo 0day ActiveX Webcam Exploit
FAQ
Common Questions.
Buffer overflow in the Yahoo!
Affected: Messenger (Yahoo) versions 2.0.1.4, 8.0, 8.0.0.863, 8.0.1, 8.0_2005.1.1.4, 8.1.0.249. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since May 1, 2010.
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 listed as exploited in the wild.
Is CVE-2007-3147 On Your Attack Surface?
Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.
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