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CVE-2013-2020

23
FAUCET Score

CVE-2013-2020 describes an integer underflow vulnerability in ClamAV versions prior to 0.97.8, specifically within the cli_scanpe function. This flaw allows remote attackers to trigger a denial of service (crash) in affected ClamAV installations, including those on Canonical and SUSE Linux distributions, by providing a specially crafted UPX packed executable. The vulnerability has a CVSS score of 5.0, indicating a medium severity, as it can be exploited remotely with low attack complexity, resulting in a denial of service without impacting confidentiality or integrity. 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
10.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:10.04:-:lts:*:*:*:*:*
11.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:11.10:*:*:*:*:*:*:*
12.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.04:-:lts:*:*:*:*:*
12.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.10:*:*:*:*:*:*:*
13.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:13.04:*:*:*:*:*:*:*

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
3.55%
Probability of exploitation in next 30 days
EPSS Percentile
88.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0355 is in the 84th percentile among its peer group of 23,705 CVEs.

Social Chatter

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

blog.clamav.net / 2013/04/clamav-0978-has-been-released.html
Patch
lists.apple.com / archives/security-announce/2013/Sep/msg00002.html
lists.apple.com / archives/security-announce/2013/Sep/msg00004.html
lists.fedoraproject.org / pipermail/package-announce/2013-June/109514.html
lists.fedoraproject.org / pipermail/package-announce/2013-June/109639.html
lists.fedoraproject.org / pipermail/package-announce/2013-June/109652.html
lists.fedoraproject.org / pipermail/package-announce/2013-May/105575.html
lists.opensuse.org / opensuse-security-announce/2014-12/msg00006.html
lists.opensuse.org / opensuse-updates/2013-06/msg00018.html
lists.opensuse.org / opensuse-updates/2013-06/msg00020.html
bugzilla.clamav.net / show_bug.cgi
secunia.com / advisories/53150
Vendor Advisory
secunia.com / advisories/53182
Vendor Advisory
github.com / vrtadmin/clamav-devel/commit/270e368b99e93aa5447d46c797c92c3f9f39f375
support.apple.com / kb/HT5880
support.apple.com / kb/HT5892
mandriva.com / security/advisories
openwall.com / lists/oss-security/2013/04/25/2
openwall.com / lists/oss-security/2013/04/29/20
securityfocus.com / bid/59434
ubuntu.com / usn/USN-1816-1