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CVE-2009-1270

24
FAUCET Score

CVE-2009-1270 describes a denial-of-service vulnerability in ClamAV versions prior to 0.95, specifically affecting the libclamav/untar.c component. A remote attacker can exploit this by providing a specially crafted TAR file, leading to an infinite loop that causes both clamd and clamscan to hang. This vulnerability carries a CVSS score of 7.8, indicating high severity due to its network-based attack vector, low attack complexity, and complete availability impact. Despite its age and high severity, 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
< 0.95CPE matchmatch criteria
cpe:2.3:a:clamav:clamav:*:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:*
8.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:8.10:*:*:*:*:*:*:*

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
5.07%
Probability of exploitation in next 30 days
EPSS Percentile
91.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0507 is in the 85th percentile among its peer group of 51,551 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

Vendor Advisories (1)

redhatCVE-2009-1270

clamav: security fixes in upstream 0.95 (CVE-2008-6680, CVE-2009-1270)

References

lists.apple.com / archives/security-announce/2009/Sep/msg00004.html
Mailing ListThird Party Advisory
osvdb.org / 53461
Broken Link
secunia.com / advisories/34716
Third Party Advisory
secunia.com / advisories/36701
Third Party Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/49846
Third Party AdvisoryVDB Entry
support.apple.com / kb/HT3865
Third Party Advisory
wwws.clamav.net / bugzilla/show_bug.cgi
Broken LinkIssue Tracking
debian.org / security/2009/dsa-1771
Third Party Advisory
mandriva.com / security/advisories
Third Party Advisory
openwall.com / lists/oss-security/2009/04/07/6
Mailing ListThird Party Advisory
securityfocus.com / bid/34357
Third Party AdvisoryVDB Entry
ubuntu.com / usn/usn-754-1
Third Party Advisory
vupen.com / english/advisories/2009/0934
Third Party Advisory