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CVE-2013-6485

15
FAUCET Score

CVE-2013-6485 describes a buffer overflow vulnerability in libpurple, the core library used by Pidgin versions prior to 2.10.8. This flaw allows a remote HTTP server to trigger a denial of service (application crash) or potentially other unspecified impacts by sending malformed chunked transfer-coding data with an invalid chunk-size field. The vulnerability has a CVSS score of 5.0 (medium severity) with a low attack complexity and no authentication required, but its primary impact is availability. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.10.7CPE matchmatch criteria
cpe:2.3:a:pidgin:pidgin:*:*:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:pidgin:pidgin:2.0.0:*:*:*:*:*:*:*
2.0.1CPE matchmatch criteria
cpe:2.3:a:pidgin:pidgin:2.0.1:*:*:*:*:*:*:*
2.0.2CPE matchmatch criteria
cpe:2.3:a:pidgin:pidgin:2.0.2:*:*:*:*:*:*:*
2.1.0CPE matchmatch criteria
cpe:2.3:a:pidgin:pidgin:2.1.0:*:*:*:*:*:*:*

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
2.41%
Probability of exploitation in next 30 days
EPSS Percentile
82.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0241 is in the 73rd 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

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: pidgin-0:2.6.6-32.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: pidgin-0:2.7.9-27.el6
View patch

Vendor Advisories (1)

redhatCVE-2013-6485Moderate

pidgin: Heap-based buffer overflow when parsing chunked HTTP responses

Jan 28, 2014

References

hg.pidgin.im / pidgin/main/rev/c9e5aba2dafd
lists.opensuse.org / opensuse-updates/2014-02/msg00039.html
lists.opensuse.org / opensuse-updates/2014-03/msg00005.html
pidgin.im / news/security
Vendor Advisory
rhn.redhat.com / errata/RHSA-2014-0139.html
debian.org / security/2014/dsa-2859
securityfocus.com / bid/65243
ubuntu.com / usn/USN-2100-1