CVE-2006-5646

mediumpriority · track · 36EPSS 0.179 · 97 %ileexploit · functionalEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · functional

Likely / severe?

17.9% (97th) EPSS

CVSS 5 · medium

Is it mine?

17 products

Check your exposure

Who says so?

2 sources

enisa_euvd · nvd

EPSS · scored 2026-10-28

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.

cvss

Technical severity, 0–10. One row per scoring source.

5.0

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v2.04.5mediumAV:N/AC:L/Au:N/C:N/I:N/A:P/E:POCsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USprimary

exploits (1)

Public proof-of-concept and weaponised exploit code.

EDB-2910Sophos AntiVirus - '.CHM' File Heap Overflow (PoC)functional · exploit_db

affected products (17)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
sophos anti-virus= 4.04nvdUScpe:2.3:a:sophos:anti-virus:*:*:*:*:*:*:*:*
sophos anti-virus= 4.05nvdUScpe:2.3:a:sophos:anti-virus:*:*:*:*:*:*:*:*
sophos anti-virus= 4.5.11nvdUScpe:2.3:a:sophos:anti-virus:*:*:*:*:*:*:*:*
sophos anti-virus= 4.5.12nvdUScpe:2.3:a:sophos:anti-virus:*:*:*:*:*:*:*:*
sophos anti-virus= 4.5.3nvdUScpe:2.3:a:sophos:anti-virus:*:*:*:*:*:*:*:*
sophos anti-virus= 4.5.4nvdUScpe:2.3:a:sophos:anti-virus:*:*:*:*:*:*:*:*
sophos anti-virus= 4.7.1nvdUScpe:2.3:a:sophos:anti-virus:*:*:*:*:*:*:*:*
sophos anti-virus= 4.7.2nvdUScpe:2.3:a:sophos:anti-virus:*:*:*:*:*:*:*:*
sophos anti-virus= 5.0.1nvdUScpe:2.3:a:sophos:anti-virus:*:*:*:*:*:*:*:*
sophos anti-virus= 5.0.2nvdUScpe:2.3:a:sophos:anti-virus:*:*:*:*:*:*:*:*
sophos anti-virus= 5.0.4nvdUScpe:2.3:a:sophos:anti-virus:*:*:*:*:*:*:*:*
sophos anti-virus= 5.1nvdUScpe:2.3:a:sophos:anti-virus:*:*:*:*:*:*:*:*
sophos anti-virus= 5.2nvdUScpe:2.3:a:sophos:anti-virus:*:*:*:*:*:*:*:*
sophos anti-virus= 5.2.1nvdUScpe:2.3:a:sophos:anti-virus:*:*:*:*:*:*:*:*
sophos anti-virus= 6.0.4nvdUScpe:2.3:a:sophos:anti-virus:*:*:*:*:*:*:*:*
sophos endpoint security≤ 6.04nvdUScpe:2.3:a:sophos:endpoint_security:*:*:*:*:*:*:*:*

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

enisa_euvd nvd NVD CVE.org MITRE

published 2006-11-01modified 2026-06-16

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+21039 more

references (12)

External citations — patches, advisories, analysis.

scry

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