CVE-2012-6706

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-14. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 10%CVSS: 9.8Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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].

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
65(Track*)
EG Risk 65/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
10%
EPSS %ILE
95%
KEV
Not listed

Published

June 22, 2017

Last Modified

June 16, 2026

Advisory Details (9)

Auto-updated Aug 19, 2026
No patch confirmed yet.
generic

ClamAV: Multiple vulnerabilities (GLSA 201804-16) — Gentoo security

https://security.gentoo.org/glsa/201804-16
generic

RAR, UnRAR: Multiple vulnerabilities (GLSA 201709-24) — Gentoo security

https://security.gentoo.org/glsa/201709-24
generic

RAR and UnRAR: User-assisted execution of arbitrary code (GLSA 201708-05) — Gentoo security

https://security.gentoo.org/glsa/201708-05
generic

Sophos News - The Sophos Blog

https://nakedsecurity.sophos.com/2012/11/05/tavis-ormandy-sophos/
generic
https://lock.cmpxchg8b.com/sophailv2.pdf
generic
https://community.sophos.com/kb/en-us/118424#six
generic
https://bugs.chromium.org/p/project-zero/issues/detail?id=1286
generic

HackAppsPro - Social Media & Devices Hack/Spy Apps of 2026

http://telussecuritylabs.com/threats/show/TSL20121207-01
generic
http://securitytracker.com/id?1027725

Affected Packages

(16 across 11 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
libclamunrar0.95.1-1 ... 0.99-3 (14 versions)0.99-4—
unrar-nonfree1:3.5.2-0.1 ... 3.4.3-1 (34 versions)1:5.5.5-1—
Debian:12(2)
PackageVulnerable rangeFixed inDependents
libclamunrar0.95.1-1 ... 0.99-3 (14 versions)0.99-4—
unrar-nonfree1:3.5.2-0.1 ... 3.4.3-1 (34 versions)1:5.5.5-1—
Debian:13(2)
PackageVulnerable rangeFixed inDependents
libclamunrar0.95.1-1 ... 0.99-3 (14 versions)0.99-4—
unrar-nonfree1:3.5.2-0.1 ... 3.4.3-1 (34 versions)1:5.5.5-1—
Debian:14(2)
PackageVulnerable rangeFixed inDependents
libclamunrar0.95.1-1 ... 0.99-3 (14 versions)0.99-4—
unrar-nonfree1:3.5.2-0.1 ... 3.4.3-1 (34 versions)1:5.5.5-1—
Debian:7(2)
PackageVulnerable rangeFixed inDependents
libclamunrar0.95.1-1 ... 0.99-0+deb7u1 (13 versions)0.99-0+deb7u2—
unrar-nonfree1:3.5.2-0.1 ... 3.4.3-1 (27 versions)1:4.1.4-1+deb7u2—
Alpine:v3.10(1)
PackageVulnerable rangeFixed inDependents
clamav0.94.2-r0 ... 0.99.3-r3 (68 versions)0.99.4-r0—
Alpine:v3.11(1)
PackageVulnerable rangeFixed inDependents
clamav0.94.2-r0 ... 0.99.3-r3 (68 versions)0.99.4-r0—
Alpine:v3.12(1)
PackageVulnerable rangeFixed inDependents
clamav0.94.2-r0 ... 0.99.3-r3 (68 versions)0.99.4-r0—
Alpine:v3.13(1)
PackageVulnerable rangeFixed inDependents
clamav0.94.2-r0 ... 0.99.3-r3 (68 versions)0.99.4-r0—
Alpine:v3.8(1)
PackageVulnerable rangeFixed inDependents
clamav0.94.2-r0 ... 0.99.3-r3 (68 versions)0.99.4-r0—
Alpine:v3.9(1)
PackageVulnerable rangeFixed inDependents
clamav0.94.2-r0 ... 0.99.3-r3 (68 versions)0.99.4-r0—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 5× in last 7d / 21× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 124 total refreshes for this CVE.

  1. 2026-08-20 22:50 UTCEPSS rescore
  2. 2026-08-19 16:59 UTCEPSS rescore
  3. 2026-08-18 13:42 UTCEPSS rescore
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  17. 2026-07-25 15:30 UTCOSV refresh
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  20. 2026-07-23 01:09 UTCEG score recompute
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  22. 2026-07-22 21:50 UTCEG score recompute
  23. 2026-07-22 14:04 UTCEPSS rescore
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  1. 2026-07-20 17:03 UTCEPSS rescore
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  17. 2026-07-08 10:05 UTCOSV refresh
  18. 2026-07-05 02:26 UTCEPSS rescore
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  23. 2026-06-28 14:03 UTCEPSS rescore
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  26. 2026-06-27 03:05 UTCEPSS rescore
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  45. 2026-06-13 22:57 UTCEPSS rescore
  46. 2026-06-12 23:08 UTCEPSS rescore
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  49. 2026-06-08 14:14 UTCEPSS rescore
  50. 2026-06-07 15:22 UTCEPSS rescore
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  63. 2026-05-31 01:25 UTCOSV refresh
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  75. 2026-05-26 07:16 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2012-6706?
CVE-2012-6706 is a critical vulnerability published on June 22, 2017. 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…
When was CVE-2012-6706 disclosed?
CVE-2012-6706 was first published in the National Vulnerability Database on June 22, 2017, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2012-6706 actively exploited?
CVE-2012-6706 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 10% probability of exploitation in the next 30 days, which ranks it in the top 4.8% of all scored CVEs.
What is the CVSS score of CVE-2012-6706?
CVE-2012-6706 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2012-6706?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2012-6706, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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