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Fencer Vulns
low 3.8

CVE-2025-49010 json

OpenSC: Stack-buffer-overflow WRITE in GET RESPONSE

published 2026-03-30 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-209124

cvss
3.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 2%
public exploits
0
none known

Summary

OpenSC is an open source smart card tools and middleware. Prior to version 0.27.0, an attacker with physical access to the computer at the time user or administrator uses a token can cause a stack-buffer-overflow write in GET RESPONSE. The attack requires crafted USB device or smart card that would present the system with specially crafted responses to the APDUs. This issue has been patched in version 0.27.0.

Patch / fix

  • opensc_project opensc 0.27.0
  • opensc Debian 14 0.27.0~rc1-1

debian advisories DEBIAN-CVE-2025-49010

  • opensc SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Basesystem 15 SP7 0.22.0-150600.11.11.1
  • opensc SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +8 more 0.22.0-150400.3.17.1
  • opensc SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 0.26.1-160000.3.1
  • opensc SLE Micro 5.2 0.19.0-150100.3.34.1
  • opensc SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 0.13.0-3.36.1

suse advisories SUSE-SU-2026:2697-1SUSE-SU-2026:2678-1SUSE-SU-2026:2657-1SUSE-SU-2026:22114-1SUSE-SU-2026:22126-1SUSE-SU-2026:1477-1

  • opensc openSUSE Leap 16.0 0.26.1-160000.3.1
  • opensc openSUSE Tumbleweed 0.27.1-1.1

opensuse advisories openSUSE-SU-2026:20967-1openSUSE-SU-2026:10475-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-49010 updated cvss 3.8

OpenSC: OpenSC: Stack-buffer-overflow via crafted smart card or USB device responses

  • Red Hat Enterprise Linux 7 opensc Red Hat Enterprise Linux 8 opensc Red Hat Enterprise Linux 9 opensc Red Hat Enterprise Linux 10 opensc
    affected: workaround, no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
7 mo ago

Exploit prediction

0.14% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 3.8 CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
NVD 3.1 6.8 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • OpenSC OpenSC

Classification

Weakness
  • CWE-121 Stack-based Buffer Overflow

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.