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CVE-2007-3123

15
FAUCET Score

CVE-2007-3123 describes a heap-based buffer overflow vulnerability in unrar.c within libclamav, affecting ClamAV versions prior to 0.90.3 and 0.91rc1. This flaw allows remote attackers to trigger a denial of service (core dump) by providing a specially crafted RAR file with a modified vm_codesize value. The vulnerability has a CVSS score of 5.0, indicating a medium severity, with a network attack vector, low attack complexity, no authentication required, and a partial impact on availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
0.90CPE matchmatch criteria
cpe:2.3:a:clam_anti-virus:clamav:0.90:*:*:*:*:*:*:*
0.90.1CPE matchmatch criteria
cpe:2.3:a:clam_anti-virus:clamav:0.90.1:*:*:*:*:*:*:*
0.90.2CPE matchmatch criteria
cpe:2.3:a:clam_anti-virus:clamav:0.90.2:*:*:*:*:*:*:*
0.90_rc1.1CPE matchmatch criteria
cpe:2.3:a:clam_anti-virus:clamav:0.90_rc1.1:*:*:*:*:*:*:*
0.90_rc2CPE matchmatch criteria
cpe:2.3:a:clam_anti-virus:clamav:0.90_rc2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.53%
Probability of exploitation in next 30 days
EPSS Percentile
83.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0253 is in the 75th percentile among its peer group of 23,723 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Remediation records are not available for this CVE.

References

kolab.org / security/kolab-vendor-notice-15.txt
lurker.clamav.net / message/20070530.224918.5c64abc4.en.html
Patch
osvdb.org / 35522
secunia.com / advisories/25523
secunia.com / advisories/25525
secunia.com / advisories/25688
secunia.com / advisories/25796
security.gentoo.org / glsa/glsa-200706-05.xml
exchange.xforce.ibmcloud.com / vulnerabilities/34778
svn.clamav.net / svn/clamav-devel/trunk/ChangeLog
wwws.clamav.net / bugzilla/show_bug.cgi
Patch
debian.org / security/2007/dsa-1320
novell.com / linux/security/advisories/2007_33_clamav.html
securityfocus.com / bid/24289