Heap-based buffer overflow in Sophos Anti-Virus and Endpoint Security before 6.0.5…
Priority MEDIUM 40CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
Heap-based buffer overflow in Sophos Anti-Virus and Endpoint Security before 6.0.5, Anti-Virus for Linux before 5.0.10, and other platforms before 4.11, when archive scanning is enabled, allows remote attackers to trigger a denial of service (memory corruption) via a CHM file with an LZX decompression header that specifies a Window_size of 0.
Why it matters now
EPSS 0.17924 97th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 16
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:sophos:anti-virus:4.04:*:*:*:*:*:*:* | 4.04 | Vulnerable | Sophos |
| cpe:2.3:a:sophos:anti-virus:4.05:*:*:*:*:*:*:* | 4.05 | Vulnerable | Sophos |
| cpe:2.3:a:sophos:anti-virus:4.5.3:*:*:*:*:*:*:* | 4.5.3 | Vulnerable | Sophos |
| cpe:2.3:a:sophos:anti-virus:4.5.4:*:*:*:*:*:*:* | 4.5.4 | Vulnerable | Sophos |
| cpe:2.3:a:sophos:anti-virus:4.5.11:*:*:*:*:*:*:* | 4.5.11 | Vulnerable | Sophos |
| cpe:2.3:a:sophos:anti-virus:4.5.12:*:*:*:*:*:*:* | 4.5.12 | Vulnerable | Sophos |
| cpe:2.3:a:sophos:anti-virus:4.7.1:*:*:*:*:*:*:* | 4.7.1 | Vulnerable | Sophos |
| cpe:2.3:a:sophos:anti-virus:4.7.2:*:*:*:*:*:*:* | 4.7.2 | Vulnerable | Sophos |
| cpe:2.3:a:sophos:anti-virus:5.0.1:*:*:*:*:*:*:* | 5.0.1 | Vulnerable | Sophos |
| cpe:2.3:a:sophos:anti-virus:5.0.2:*:*:*:*:*:*:* | 5.0.2 | Vulnerable | Sophos |
- cpe:2.3:a:sophos:anti-virus:4.04:*:*:*:*:*:*:* Versions 4.04 Vulnerable ·Sophos
- cpe:2.3:a:sophos:anti-virus:4.05:*:*:*:*:*:*:* Versions 4.05 Vulnerable ·Sophos
- cpe:2.3:a:sophos:anti-virus:4.5.3:*:*:*:*:*:*:* Versions 4.5.3 Vulnerable ·Sophos
- cpe:2.3:a:sophos:anti-virus:4.5.4:*:*:*:*:*:*:* Versions 4.5.4 Vulnerable ·Sophos
- cpe:2.3:a:sophos:anti-virus:4.5.11:*:*:*:*:*:*:* Versions 4.5.11 Vulnerable ·Sophos
- cpe:2.3:a:sophos:anti-virus:4.5.12:*:*:*:*:*:*:* Versions 4.5.12 Vulnerable ·Sophos
- cpe:2.3:a:sophos:anti-virus:4.7.1:*:*:*:*:*:*:* Versions 4.7.1 Vulnerable ·Sophos
- cpe:2.3:a:sophos:anti-virus:4.7.2:*:*:*:*:*:*:* Versions 4.7.2 Vulnerable ·Sophos
- cpe:2.3:a:sophos:anti-virus:5.0.1:*:*:*:*:*:*:* Versions 5.0.1 Vulnerable ·Sophos
- cpe:2.3:a:sophos:anti-virus:5.0.2:*:*:*:*:*:*:* Versions 5.0.2 Vulnerable ·Sophos
Show 6 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:sophos:anti-virus:5.0.4:*:*:*:*:*:*:* | 5.0.4 | Vulnerable | Sophos |
| cpe:2.3:a:sophos:anti-virus:5.1:*:*:*:*:*:*:* | 5.1 | Vulnerable | Sophos |
| cpe:2.3:a:sophos:anti-virus:5.2:*:*:*:*:*:*:* | 5.2 | Vulnerable | Sophos |
| cpe:2.3:a:sophos:anti-virus:5.2.1:*:*:*:*:*:*:* | 5.2.1 | Vulnerable | Sophos |
| cpe:2.3:a:sophos:anti-virus:6.0.4:*:*:*:*:*:*:* | 6.0.4 | Vulnerable | Sophos |
| cpe:2.3:a:sophos:endpoint_security:*:*:*:*:*:*:*:* | up to 6.04 | Vulnerable | Sophos |
- cpe:2.3:a:sophos:anti-virus:5.0.4:*:*:*:*:*:*:* Versions 5.0.4 Vulnerable ·Sophos
- cpe:2.3:a:sophos:anti-virus:5.1:*:*:*:*:*:*:* Versions 5.1 Vulnerable ·Sophos
- cpe:2.3:a:sophos:anti-virus:5.2:*:*:*:*:*:*:* Versions 5.2 Vulnerable ·Sophos
- cpe:2.3:a:sophos:anti-virus:5.2.1:*:*:*:*:*:*:* Versions 5.2.1 Vulnerable ·Sophos
- cpe:2.3:a:sophos:anti-virus:6.0.4:*:*:*:*:*:*:* Versions 6.0.4 Vulnerable ·Sophos
- cpe:2.3:a:sophos:endpoint_security:*:*:*:*:*:*:*:* Versions up to 6.04 Vulnerable ·Sophos
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2006-5646
- 2026-10-03 Alias added: GHSA-cmj2-m79r-9mvg
References
More Sophos Anti-virus vulnerabilities
- TI-2008-06592 Multiple unspecified vulnerabilities in Sophos SAVScan 4.33.0 for Linux, and possibly… CVSS 2.0HIGH 10.0
- TI-2008-05257 Sophos Anti-Virus 4.33.0, when Internet Explorer 6 or 7 is used, allows remote attackers… CVSS 2.0HIGH 9.3
- TI-2006-05451 Sophos Anti-Virus and Endpoint Security before 6.0.5, Anti-Virus for Linux before 5.0.10… CVSS 2.0MEDIUM 6.4
- TI-2007-04430 Sophos Anti-Virus for Unix/Linux before 2.48.0 allows remote attackers to cause a denial… CVSS 2.0HIGH 7.8
- TI-2007-04431 Sophos Anti-Virus for Windows and for Unix/Linux before 2.48.0 allows remote attackers to… CVSS 2.0MEDIUM 6.8
- TI-2006-05449 Sophos Anti-Virus and Endpoint Security before 6.0.5, Anti-Virus for Linux before 5.0.10… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2006-5646 · CVE Program
- CVE-2006-5646 · NVD
- FIRST EPSS
- GHSA-cmj2-m79r-9mvg · GitHub Advisory Database · CC BY 4.0
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