CVE-2012-6706
A VMSF_DELTA memory corruption was discovered in unrar before 5.5.5, as used in Sophos Anti-Virus Threat Detection Engine before 3.37.2…
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
A VMSF_DELTA memory corruption was discovered in unrar before 5.5.5, as used in Sophos Anti-Virus Threat Detection Engine before 3.37.2 and other products, that can lead to arbitrary code execution. An integer overflow can be caused in DataSize+CurChannel. The result is a negative value of the "DestPos" variable, which allows the attacker to write out of bounds when setting Mem[DestPos].
Timeline
ID reserved
By mitre
Published
- 7 years later
· 7 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Critical9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 10.1% · top 4.3% of all CVEs (8 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
Affected products
n/a
- affected n/a
References (10)
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1286 (opens in a new tab)x_refsource_MISCx_transferred
- https://nakedsecurity.sophos.com/2012/11/05/tavis-ormandy-sophos/ (opens in a new tab)x_refsource_MISCx_transferred
- GLSA-201709-24 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- https://community.sophos.com/kb/en-us/118424#six (opens in a new tab)x_refsource_MISCx_transferred
- GLSA-201708-05 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- https://lock.cmpxchg8b.com/sophailv2.pdf (opens in a new tab)x_refsource_MISCx_transferred
- GLSA-201804-16 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- https://kc.mcafee.com/corporate/index?page=content&id=SB10205 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://telussecuritylabs.com/threats/show/TSL20121207-01 (opens in a new tab)x_refsource_MISCx_transferred
- http://securitytracker.com/id?1027725 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2012-6706)Record last updated .