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CVE-2025-49010

25
FAUCET Score

CVE-2025-49010 is a stack-buffer-overflow vulnerability found in OpenSC versions prior to 0.27.0, specifically within its GET RESPONSE function. This medium-severity vulnerability (CVSS 6.8) requires an attacker to have physical access to the system and present a specially crafted USB device or smart card while a user or administrator is actively using a token. Successful exploitation could lead to high impact on confidentiality, integrity, and availability. However, it relies on specific timing and physical presence, making the attack vector physical (AV:P) and attack complexity low (AC:L). There is currently no evidence of active exploitation, public exploit code, or significant community discussion regarding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.27.0CPE matchmatch criteria
cpe:2.3:a:opensc_project:opensc:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.8LOW

CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

Attack Vector
PHYSICAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
0.4
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.13%
Probability of exploitation in next 30 days
EPSS Percentile
3.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0013 is in the 4th percentile among its peer group of 1,531 CVEs.

Social Chatter

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

Media Mentions

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (9)

microsoftpatch availablevia msrc
Product: azl3 opensc 0.27.1-2 on Azure Linux 3.0Fixed in: 0.27.1-1
microsoftpatch availablevia msrc
Product: 19952-17086Fixed in: 0.23.0-6
microsoftpatch availablevia msrc
Product: 21146-17084Fixed in: 0.27.1-1
microsoftpatch availablevia msrc
Product: 21210-17084Fixed in: 0.27.1-1
microsoftpatch availablevia msrc
Product: 21490-17084Fixed in: 0.27.1-1
microsoftpatch availablevia msrc
Product: cbl2 opensc 0.23.0-5 on CBL Mariner 2.0Fixed in: 0.23.0-6
microsoftpatch availablevia msrc
Product: azl3 opensc 0.26.1-1 on Azure Linux 3.0Fixed in: 0.27.1-1
microsoftpatch availablevia msrc
Product: azl3 opensc 0.27.1-1 on Azure Linux 3.0Fixed in: 0.27.1-1
github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

microsoft2026-Mar/CVE-2025-49010Low

OpenSC: Stack-buffer-overflow WRITE in GET RESPONSE

Mar 10, 2026

References

github.com / OpenSC/OpenSC/security/advisories/GHSA-q5cf-5wmx-9wh4
Vendor Advisory
github.com / OpenSC/OpenSC/wiki/CVE-2025-49010
Vendor Advisory