CVE-2026-40510 (GCVE-0-2026-40510)

Vulnerability from cvelistv5 – Published: 2026-05-29 13:26 – Updated: 2026-05-29 13:39 X_Open Source
VLAI
Title
OpenSC < 0.27.0-rc1 Stack Buffer Overflow via piv_process_history() in card-piv.c
Summary
OpenSC before 0.27.0-rc1, fixed in commit 3f24f0b, contains a stack buffer overflow vulnerability in piv_process_history() in src/libopensc/card-piv.c that allows physically present attackers to trigger memory corruption by presenting a crafted PIV smart card or USB device returning a URL field longer than 118 bytes in the Key History Object ASN.1 response.
Severity
1 (Low)
CVSS:4.0/AV:P/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
3.8 (Low)
CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
OpenSC OpenSC Affected: 0 , < 0.27.0-rc1 (semver)
Affected: 0 , < 3f24f0b48a481a8cf2e46059d8238a283ddc1c13 (git)
Create a notification for this product.
Date Public
2026-01-26 00:00
Credits
Nicholas Carlini of Anthropic
Show details on NVD website
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{
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        {
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          "product": "OpenSC",
          "repo": "https://github.com/OpenSC/OpenSC",
          "vendor": "OpenSC",
          "versions": [
            {
              "lessThan": "0.27.0-rc1",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "3f24f0b48a481a8cf2e46059d8238a283ddc1c13",
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              "version": "0",
              "versionType": "git"
            }
          ]
        }
      ],
      "credits": [
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          "type": "finder",
          "value": "Nicholas Carlini of Anthropic"
        }
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      "descriptions": [
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        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
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            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "HIGH",
            "attackRequirements": "NONE",
            "attackVector": "PHYSICAL",
            "baseScore": 1,
            "baseSeverity": "LOW",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "valueDensity": "NOT_DEFINED",
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            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L",
            "version": "3.1"
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          "scenarios": [
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              "value": "GENERAL"
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      "problemTypes": [
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          "descriptions": [
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              "cweId": "CWE-121",
              "description": "Stack-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
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      "providerMetadata": {
        "dateUpdated": "2026-05-29T13:39:29.643Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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      "references": [
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          "tags": [
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          "url": "https://github.com/OpenSC/OpenSC/pull/3558"
        },
        {
          "tags": [
            "patch"
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          "url": "https://github.com/OpenSC/OpenSC/commit/3f24f0b48a481a8cf2e46059d8238a283ddc1c13"
        },
        {
          "tags": [
            "third-party-advisory"
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          "url": "https://www.vulncheck.com/advisories/opensc-stack-buffer-overflow-via-piv-process-history-in-card-piv-c"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "tags": [
        "x_open-source"
      ],
      "title": "OpenSC \u003c 0.27.0-rc1 Stack Buffer Overflow via piv_process_history() in card-piv.c",
      "x_generator": {
        "engine": "vulncheck"
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  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-40510",
    "datePublished": "2026-05-29T13:26:40.459Z",
    "dateReserved": "2026-04-13T20:29:02.809Z",
    "dateUpdated": "2026-05-29T13:39:29.643Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.