Out-of-bounds Read Affecting opensc package, versions <0.26.1-160000.3.1


Severity

Recommended
0.0
low
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.25% (17th percentile)

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  • Snyk IDSNYK-SLES1600-OPENSC-17354420
  • published17 Jun 2026
  • disclosed15 Jun 2026

Introduced: 15 Jun 2026

CVE-2025-66037  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade SLES:16.0.0 opensc to version 0.26.1-160000.3.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream opensc package and not the opensc package as distributed by SLES. See How to fix? for SLES:16.0.0 relevant fixed versions and status.

OpenSC is an open source smart card tools and middleware. Prior to version 0.27.0, feeding a crafted input to the fuzz_pkcs15_reader harness causes OpenSC to perform an out-of-bounds heap read in the X.509/SPKI handling path. Specifically, sc_pkcs15_pubkey_from_spki_fields() allocates a zero-length buffer and then reads one byte past the end of that allocation. This issue has been patched in version 0.27.0.

CVSS Base Scores

version 3.1