CVE-2021-35940

Estado: ModificadaAlta (7.1)—
An out-of-bounds array read in the apr_time_exp*() functions was fixed in the Apache Portable Runtime 1.6.3 release (CVE-2017-12613). The fix for this issue was not carried forward to the APR 1.7.x branch, and hence version 1.7.0 regressed compared to 1.6.3 and is vulnerable to the same issue.
CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Puntuación base: 7.1
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 1.19%
Percentil entre todas las CVEs puntuadas: 67
Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (2)

Apache — Portable Runtime Oracle — Http Server
CWE

CWE-125
Referencias

JSON original (NVD)

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  "id": "CVE-2021-35940",
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          "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
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        "acInsufInfo": false,
        "impactScore": 4.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
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  "published": "2021-08-23T10:15:07.230",
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          "value": "CWE-125"
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      "lang": "en",
      "value": "An out-of-bounds array read in the apr_time_exp*() functions was fixed in the Apache Portable Runtime 1.6.3 release (CVE-2017-12613). The fix for this issue was not carried forward to the APR 1.7.x branch, and hence version 1.7.0 regressed compared to 1.6.3 and is vulnerable to the same issue."
    },
    {
      "lang": "es",
      "value": "Se ha corregido una lectura de matrices fuera de límites en la función apr_time_exp*() en Apache Portable Runtime versión 1.6.3 (CVE-2017-12613). La corrección de este problema no se trasladó a la rama APR versión 1.7.x, por lo que la versión 1.7.0 retrocedió en comparación con la versión 1.6.3 y es vulnerable al mismo problema."
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  "lastModified": "2026-06-17T03:57:58.057",
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