A flaw has been found in OpenSC up to 0.26.1. This affects the function test_kpgen_certwrite of the file src/tools/pkcs11-tool.c of the component pkcs11-tool Key Generation Module. This manipulation causes buffer overflow. The attack is possible to be carried out remotely. The complexity of an attack is rather high. It is indicated that the exploitability is difficult. The exploit has been published and may be used. Patch name: 814f745b3b6d100295f65f1935edd33d520d33ab. It is recommended to apply a patch to fix this issue.

suse_linux SUSE-SU-2026:2697-1: SUSE SLED15 / SLES15 : Security update for opensc (Important) (SUSE-SU-2026:2697-1)

The remote SUSE Linux SLES12 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2678-1 advisory.

    This update for opensc fixes the following issues

    - CVE-2025-49010: stack-buffer-overflow via crafted smart card or USB device responses (bsc#1261214).
    - CVE-2025-66215: crafted smart card or USB device can cause a stack-buffer-overflow write (bsc#1261220).
    - CVE-2026-10275: global buffer overflow during key pair generation tests due to missing input validation     (bsc#1267246).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2657-1 advisory.

    This update for opensc fixes the following issues

    - CVE-2025-49010: stack-buffer-overflow via crafted smart card or USB device responses (bsc#1261214).
    - CVE-2025-66037: crafted input can cause an out-of-bounds read (bsc#1261218).
    - CVE-2025-66038: improper compact-TLV length validation can lead to crash or unexpected behavior     (bsc#1261219).
    - CVE-2025-66215: crafted smart card or USB device can cause a stack-buffer-overflow write (bsc#1261220).
    - CVE-2026-10275: global buffer overflow during key pair generation tests due to missing input validation     (bsc#1267246).
    - CVE-2026-40528: stack and heap buffer overrun in the `do_key_value()` function due to missing length     check allows for       memory corruption via a crafted profile configuration file (bsc#1266963).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A flaw has been found in OpenSC up to 0.26.1. This affects the function test_kpgen_certwrite of the file     src/tools/pkcs11-tool.c of the component pkcs11-tool Key Generation Module. This manipulation causes     buffer overflow. The attack is possible to be carried out remotely. The complexity of an attack is rather     high. It is indicated that the exploitability is difficult. The exploit has been published and may be     used. Patch name: 814f745b3b6d100295f65f1935edd33d520d33ab. It is recommended to apply a patch to fix this     issue. (CVE-2026-10275)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
323890	SUSE SLES12 Security Update : opensc (SUSE-SU-2026:2678-1)	Nessus	SuSE Local Security Checks	low
323240	SUSE SLES15 Security Update : opensc (SUSE-SU-2026:2657-1)	Nessus	SuSE Local Security Checks	low
318226	Linux Distros Unpatched Vulnerability : CVE-2026-10275	Nessus	Misc.	medium

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