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CVE-2010-4528

18
FAUCET Score

CVE-2010-4528 describes a denial-of-service vulnerability in the MSN protocol plugin of Pidgin's libpurple library (versions 2.7.6 through 2.7.8). An authenticated remote attacker can crash the application by sending a malformed (short) p2pv2 packet during a DirectConnect session, leading to a NULL pointer dereference. The CVSS score of 4.0 indicates a low severity, with an attack vector over the network, low attack complexity, requiring authentication, and resulting in partial 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
2.7.6CPE matchmatch criteria
cpe:2.3:a:pidgin:libpurple:2.7.6:*:*:*:*:*:*:*
2.7.7CPE matchmatch criteria
cpe:2.3:a:pidgin:libpurple:2.7.7:*:*:*:*:*:*:*
2.7.8CPE matchmatch criteria
cpe:2.3:a:pidgin:libpurple:2.7.8:*:*:*:*:*:*:*
<= 2.7.8CPE matchmatch criteria
cpe:2.3:a:pidgin:pidgin:*:*:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:pidgin:pidgin:2.0.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Exploitability Score
8.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.55%
Probability of exploitation in next 30 days
EPSS Percentile
83.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0255 is in the 94th percentile among its peer group of 21,939 CVEs.

Social Chatter

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

Vendor Advisories (1)

redhatCVE-2010-4528Moderate

Pidgin: MSN DirectConnect DoS (crash) after receiving a short P2P message

Dec 26, 2010

References

developer.pidgin.im / viewmtn/revision/diff/e76f4ad4ef2f10588195a0eedc7a08f82062f79c/with/aaa07bde3c51d3684391ae6ed86b6dbaeab5d031/libpurple/protocols/msn/directconn.c
Patch
developer.pidgin.im / viewmtn/revision/info/aaa07bde3c51d3684391ae6ed86b6dbaeab5d031
Patch
lists.fedoraproject.org / pipermail/package-announce/2011-January/052862.html
lists.fedoraproject.org / pipermail/package-announce/2011-January/052905.html
lists.opensuse.org / opensuse-security-announce/2011-01/msg00003.html
pidgin.im / pipermail/support/2010-December/009251.html
Patch
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/42732
Vendor Advisory
secunia.com / advisories/42824
Vendor Advisory
secunia.com / advisories/42877
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18461
mandriva.com / security/advisories
openwall.com / lists/oss-security/2010/12/27/1
Patch
openwall.com / lists/oss-security/2010/12/31/5
Patch
pidgin.im / news/security
PatchVendor Advisory
securityfocus.com / bid/45581
vupen.com / english/advisories/2011/0028
Vendor Advisory
vupen.com / english/advisories/2011/0054
vupen.com / english/advisories/2011/0076