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CVE-2007-4577

24
FAUCET Score

CVE-2007-4577 describes a denial-of-service vulnerability in Sophos Anti-Virus for Unix/Linux versions prior to 2.48.0, affecting Sophos Anti-Virus, Scanning Engine, and Small Business Suite. Remote attackers can exploit this by submitting a specially crafted BZip file, leading to an infinite loop and the creation of numerous temporary files, effectively causing a "BZip bomb." This vulnerability has a CVSS score of 7.8, indicating high severity due to its network-based attack vector, low complexity, and complete availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
3.4.6CPE matchmatch criteria
cpe:2.3:a:sophos:anti-virus:3.4.6:*:*:*:*:*:*:*
3.78CPE matchmatch criteria
cpe:2.3:a:sophos:anti-virus:3.78:*:*:*:*:*:*:*
3.78dCPE matchmatch criteria
cpe:2.3:a:sophos:anti-virus:3.78d:*:*:*:*:*:*:*
3.79CPE matchmatch criteria
cpe:2.3:a:sophos:anti-virus:3.79:*:*:*:*:*:*:*
3.80CPE matchmatch criteria
cpe:2.3:a:sophos:anti-virus:3.80:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.8HIGH

AV:N/AC:L/Au:N/C:N/I:N/A:C

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
5.53%
Probability of exploitation in next 30 days
EPSS Percentile
92.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0553 is in the 86th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

secunia.com / advisories/26580
PatchVendor Advisory
securityreason.com / securityalert/3073
securitytracker.com / id
nruns.com / security_advisory_sophos_gzip_infinite_loop_dos.php
securityfocus.com / archive/1/477727/100/0/threaded
securityfocus.com / bid/25428
sophos.com / support/knowledgebase/article/28407.html
vupen.com / english/advisories/2007/2972