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CVE-2009-4902

20
FAUCET Score

CVE-2009-4902 describes a buffer overflow vulnerability in the MSGFunctionDemarshall function within the PC/SC Smart Card daemon (PCSCD) in MUSCLE PCSC-Lite versions 1.5.4 and earlier. This flaw, stemming from an incorrect fix for CVE-2010-0407, could allow authenticated local users to escalate privileges by sending specially crafted SCARD_CONTROL message data. With a CVSS score of 6.8 (AV:L/AC:L/Au:S/C:C/I:C/A:C), it indicates a high potential for impact on confidentiality, integrity, and availability, requiring local access and authentication. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.5.4CPE matchmatch criteria
cpe:2.3:a:muscle:pcsc-lite:*:*:*:*:*:*:*:*
1.1.2CPE matchmatch criteria
cpe:2.3:a:muscle:pcsc-lite:1.1.2:beta2:*:*:*:*:*:*
1.1.2CPE matchmatch criteria
cpe:2.3:a:muscle:pcsc-lite:1.1.2:beta3:*:*:*:*:*:*
1.1.2CPE matchmatch criteria
cpe:2.3:a:muscle:pcsc-lite:1.1.2:beta4:*:*:*:*:*:*
1.1.2CPE matchmatch criteria
cpe:2.3:a:muscle:pcsc-lite:1.1.2:beta5:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
SINGLE
Exploitability Score
3.1
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
30.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0038 is in the 86th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (2)

redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: pcsc-lite
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: pcsc-lite

Vendor Advisories (1)

redhatCVE-2009-4902Moderate

pcsc-lite: Privilege escalation via specially-crafted client to PC/SC Smart Card daemon messages

Jun 10, 2010

References

lists.fedoraproject.org / pipermail/package-announce/2010-July/044124.html
lists.fedoraproject.org / pipermail/package-announce/2010-June/042900.html
lists.fedoraproject.org / pipermail/package-announce/2010-June/042921.html
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/40140
Vendor Advisory
secunia.com / advisories/40239
Vendor Advisory
svn.debian.org / wsvn/pcsclite
debian.org / security/2010/dsa-2059
securityfocus.com / bid/40758
vupen.com / english/advisories/2010/1427
Vendor Advisory
vupen.com / english/advisories/2010/1508
Vendor Advisory