CVE-2015-1299

Status: ModifiedHigh (7.5)—

Use-after-free vulnerability in the shared-timer implementation in Blink, as used in Google Chrome before 45.0.2454.85, allows remote attackers to cause a denial of service or possibly have unspecified other impact by leveraging erroneous timer firing, related to ThreadTimers.cpp and Timer.cpp.

CVSS

Version: 2.0
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Base score: 7.5

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 1.69%
Percentile among all scored CVEs: 77
Score date: 10/19/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Google — Chrome

CWEs

NVD-CWE-Other

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2015-1299",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "chrome-cve-admin@google.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2015-09-03T22:59:09.967",
  "references": [
    {
      "url": "http://googlechromereleases.blogspot.com/2015/09/stable-channel-update.html",
      "source": "chrome-cve-admin@google.com"
    },
    {
      "url": "http://lists.opensuse.org/opensuse-updates/2015-09/msg00029.html",
      "source": "chrome-cve-admin@google.com"
    },
    {
      "url": "http://lists.opensuse.org/opensuse-updates/2015-11/msg00013.html",
      "source": "chrome-cve-admin@google.com"
    },
    {
      "url": "http://rhn.redhat.com/errata/RHSA-2015-1712.html",
      "source": "chrome-cve-admin@google.com"
    },
    {
      "url": "http://www.debian.org/security/2015/dsa-3351",
      "source": "chrome-cve-admin@google.com"
    },
    {
      "url": "http://www.securitytracker.com/id/1033472",
      "source": "chrome-cve-admin@google.com"
    },
    {
      "url": "https://code.google.com/p/chromium/issues/detail?id=416362",
      "source": "chrome-cve-admin@google.com"
    },
    {
      "url": "https://codereview.chromium.org/1153763005/",
      "source": "chrome-cve-admin@google.com"
    },
    {
      "url": "https://codereview.chromium.org/956333002/",
      "source": "chrome-cve-admin@google.com"
    },
    {
      "url": "https://codereview.chromium.org/959263002/",
      "source": "chrome-cve-admin@google.com"
    },
    {
      "url": "https://security.gentoo.org/glsa/201603-09",
      "source": "chrome-cve-admin@google.com"
    },
    {
      "url": "http://googlechromereleases.blogspot.com/2015/09/stable-channel-update.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://lists.opensuse.org/opensuse-updates/2015-09/msg00029.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://lists.opensuse.org/opensuse-updates/2015-11/msg00013.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://rhn.redhat.com/errata/RHSA-2015-1712.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.debian.org/security/2015/dsa-3351",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id/1033472",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://code.google.com/p/chromium/issues/detail?id=416362",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://codereview.chromium.org/1153763005/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://codereview.chromium.org/956333002/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://codereview.chromium.org/959263002/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://security.gentoo.org/glsa/201603-09",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Use-after-free vulnerability in the shared-timer implementation in Blink, as used in Google Chrome before 45.0.2454.85, allows remote attackers to cause a denial of service or possibly have unspecified other impact by leveraging erroneous timer firing, related to ThreadTimers.cpp and Timer.cpp."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de uso después de liberación en la memoria en la implementación shared-timer en Blink, como se utiliza en Google Chrome en versiones anteriores a 45.0.2454.85, permite a atacantes remotos causar una denegación de servicio o posiblemente tener otro impacto no especificado aprovechando la activación errónea del temporizador, relacionada con ThreadTimers.cpp y Timer.cpp."
    }
  ],
  "lastModified": "2026-06-17T00:22:08.857",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "BBDC4A7D-C94E-42B2-983F-A7660C62A1CD",
              "versionEndIncluding": "44.0.2403"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "evaluatorComment": "<a href=\"http://cwe.mitre.org/data/definitions/416.html\">CWE-416: Use After Free</a>",
  "sourceIdentifier": "chrome-cve-admin@google.com"
}