CVE-2007-4577

Sophos Anti-Virus for Unix/Linux before 2.48.0 allows remote attackers to cause a denial of service (infinite loop) via a malformed BZip file that results in the creation of multiple Engine temporary files (aka a "BZip bomb").

Published: 2007-08-28 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2007-4577 is rated Moderate Risk (63.3/100): CVSS High severity, with high exploitation likelihood (EPSS 5.53%, 92th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2007-4577

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 5.56% 5.53% -0.03%
2 2026-04-16 5.36% 5.56% +0.21%
3 2025-03-30 — 5.36% —

Full EPSS history (16 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2007-4577

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 2.0 HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 6.9 [email protected]

Weakness enumeration for CVE-2007-4577

Affected software / configurations for CVE-2007-4577

Vendor Product Version Raw CPE
sophos anti-virus 3.4.6 cpe:2.3:a:sophos:anti-virus:3.4.6:*:*:*:*:*:*:*
sophos anti-virus 3.78 cpe:2.3:a:sophos:anti-virus:3.78:*:*:*:*:*:*:*
sophos anti-virus 3.78d cpe:2.3:a:sophos:anti-virus:3.78d:*:*:*:*:*:*:*
sophos anti-virus 3.79 cpe:2.3:a:sophos:anti-virus:3.79:*:*:*:*:*:*:*
sophos anti-virus 3.80 cpe:2.3:a:sophos:anti-virus:3.80:*:*:*:*:*:*:*
sophos anti-virus 3.81 cpe:2.3:a:sophos:anti-virus:3.81:*:*:*:*:*:*:*
sophos anti-virus 3.82 cpe:2.3:a:sophos:anti-virus:3.82:*:*:*:*:*:*:*
sophos anti-virus 3.83 cpe:2.3:a:sophos:anti-virus:3.83:*:*:*:*:*:*:*
sophos anti-virus 3.84 cpe:2.3:a:sophos:anti-virus:3.84:*:*:*:*:*:*:*
sophos anti-virus 3.85 cpe:2.3:a:sophos:anti-virus:3.85:*:*:*:*:*:*:*
sophos anti-virus 3.86 cpe:2.3:a:sophos:anti-virus:3.86:*:*:*:*:*:*:*
sophos anti-virus 3.90 cpe:2.3:a:sophos:anti-virus:3.90:*:*:*:*:*:*:*
sophos anti-virus 3.91 cpe:2.3:a:sophos:anti-virus:3.91:*:*:*:*:*:*:*
sophos anti-virus 3.95 cpe:2.3:a:sophos:anti-virus:3.95:*:*:*:*:*:*:*
sophos anti-virus 3.96.0 cpe:2.3:a:sophos:anti-virus:3.96.0:*:*:*:*:*:*:*
sophos anti-virus 4.03 cpe:2.3:a:sophos:anti-virus:4.03:*:linux:*:*:*:*:*
sophos anti-virus 4.04 cpe:2.3:a:sophos:anti-virus:4.04:*:*:*:*:*:*:*
sophos anti-virus 4.05 cpe:2.3:a:sophos:anti-virus:4.05:*:*:*:*:*:*:*
sophos anti-virus 4.5.3 cpe:2.3:a:sophos:anti-virus:4.5.3:*:*:*:*:*:*:*
sophos anti-virus 4.5.4 cpe:2.3:a:sophos:anti-virus:4.5.4:*:*:*:*:*:*:*
sophos anti-virus 4.5.11 cpe:2.3:a:sophos:anti-virus:4.5.11:*:*:*:*:*:*:*
sophos anti-virus 4.5.12 cpe:2.3:a:sophos:anti-virus:4.5.12:*:*:*:*:*:*:*
sophos anti-virus 4.7.1 cpe:2.3:a:sophos:anti-virus:4.7.1:*:*:*:*:*:*:*
sophos anti-virus 4.7.2 cpe:2.3:a:sophos:anti-virus:4.7.2:*:*:*:*:*:*:*
sophos anti-virus 5.0.1 cpe:2.3:a:sophos:anti-virus:5.0.1:*:*:*:*:*:*:*
sophos anti-virus 5.0.2 cpe:2.3:a:sophos:anti-virus:5.0.2:*:*:*:*:*:*:*
sophos anti-virus 5.0.4 cpe:2.3:a:sophos:anti-virus:5.0.4:*:*:*:*:*:*:*
sophos anti-virus 5.0.9 cpe:2.3:a:sophos:anti-virus:5.0.9:*:*:*:*:*:*:*
sophos anti-virus 5.0.9 cpe:2.3:a:sophos:anti-virus:5.0.9:*:linux:*:*:*:*:*
sophos anti-virus 5.1 cpe:2.3:a:sophos:anti-virus:5.1:*:*:*:*:*:*:*
sophos anti-virus 5.2 cpe:2.3:a:sophos:anti-virus:5.2:*:*:*:*:*:*:*
sophos anti-virus 5.2.1 cpe:2.3:a:sophos:anti-virus:5.2.1:*:*:*:*:*:*:*
sophos anti-virus 6.5 cpe:2.3:a:sophos:anti-virus:6.5:*:*:*:*:*:*:*
sophos scanning_engine 2.30.4 cpe:2.3:a:sophos:scanning_engine:2.30.4:*:*:*:*:*:*:*
sophos scanning_engine 2.40.2 cpe:2.3:a:sophos:scanning_engine:2.40.2:*:*:*:*:*:*:*
sophos small_business_suite 4.04 cpe:2.3:a:sophos:small_business_suite:4.04:*:*:*:*:*:*:*
sophos small_business_suite 4.05 cpe:2.3:a:sophos:small_business_suite:4.05:*:*:*:*:*:*:*

References for CVE-2007-4577

cvelogic Threat Intelligence