VulnSocial

CVE-2025-66037Disclosure(opensc_project / opensc)

LOWCVSS 6.8 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

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.

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0.0/ 10 priority

Sources & remediation

Exploit / PoC references
Vendor / third-party advisories
Weakness type (CWE)
CWE-125

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • opensc

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
opensc_project
Products
opensc

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-03-31: 1Technical Details · 2026-03-31: 103-31
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • CVE@CVEnew
    Disclosure

    CVE-2025-66037 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 … https://www.cve.org/CVERecord?id=CVE-2025-66037

    Post summary

    This snippet announces CVE‑2025‑66037, detailing that a crafted input to the fuzz_pkcs15_reader harness in OpenSC before version 0.27.0 leads to a vulnerability, but it lacks PoC, exploit, or mitigation information.

    00000191
    56.9K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appopensc_projectopensc---

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