CVE-2026-74988 (GCVE-0-2026-74988)

Vulnerability from cvelistv5 – Published: 2026-08-18 12:23 – Updated: 2026-08-18 12:23
VLAI
Title
Internally found bugs fixed in Firefox ESR 153.1 and Firefox 154
Summary
Internally found bugs present in Firefox ESR 153.0 and Firefox 153. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. This vulnerability was fixed in Firefox 154 and Firefox ESR 153.1.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Mozilla Firefox Unaffected: 153.1 , ≤ 153.* (rpm)
Unaffected: 154 , ≤ * (rpm)
guessed Create a notification for this product.
Credits
Gabriele Svelto, Tom Ritter, Tom Schuster and the Mozilla Fuzzing Team
Show details on NVD website
To clipboard 

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      "affected": [
        {
          "product": "Firefox",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThanOrEqual": "153.*",
              "status": "unaffected",
              "version": "153.1",
              "versionType": "rpm"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "154",
              "versionType": "rpm"
            }
          ]
        }
      ],
      "credits": [
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          "lang": "en",
          "value": "Gabriele Svelto, Tom Ritter, Tom Schuster and the Mozilla Fuzzing Team"
        }
      ],
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            }
          ],
          "value": "Internally found bugs present in Firefox ESR 153.0 and Firefox 153. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. This vulnerability was fixed in Firefox 154 and Firefox ESR 153.1."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-18T12:23:41.611Z",
        "orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
        "shortName": "mozilla"
      },
      "references": [
        {
          "name": "Moderate Severity internally found bugs fixed in Firefox ESR 153.1 and Firefox 154",
          "url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=2018164%2C2045404%2C2045507%2C2045711%2C2052403%2C2053174%2C2054643%2C2054667%2C2054671%2C2054674%2C2054687%2C2054717%2C2054761%2C2054787%2C2055676%2C2056779%2C2056781%2C2058629%2C2059019%2C2059138"
        },
        {
          "name": "High Severity internally found bugs fixed in Firefox ESR 153.1 and Firefox 154",
          "url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=2045796%2C2046734%2C2051424%2C2054721%2C2057994%2C2058094%2C2058611%2C2058615%2C2058616%2C2061315"
        },
        {
          "name": "Low Severity internally found bugs fixed in Firefox ESR 153.1 and Firefox 154",
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        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-74/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-77/"
        }
      ],
      "title": "Internally found bugs fixed in Firefox ESR 153.1 and Firefox 154"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
    "assignerShortName": "mozilla",
    "cveId": "CVE-2026-74988",
    "datePublished": "2026-08-18T12:23:41.611Z",
    "dateReserved": "2026-08-17T11:59:23.074Z",
    "dateUpdated": "2026-08-18T12:23:41.611Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-74988\",\"sourceIdentifier\":\"security@mozilla.org\",\"published\":\"2026-08-18T13:17:40.687\",\"lastModified\":\"2026-08-18T14:49:11.260\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Internally found bugs present in Firefox ESR 153.0 and Firefox 153. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. This vulnerability was fixed in Firefox 154 and Firefox ESR 153.1.\"}],\"affected\":[{\"source\":\"security@mozilla.org\",\"affectedData\":[{\"vendor\":\"Mozilla\",\"product\":\"Firefox\",\"versions\":[{\"version\":\"153.1\",\"lessThanOrEqual\":\"153.*\",\"versionType\":\"rpm\",\"status\":\"unaffected\"},{\"version\":\"154\",\"lessThanOrEqual\":\"*\",\"versionType\":\"rpm\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://bugzilla.mozilla.org/buglist.cgi?bug_id=2018164%2C2045404%2C2045507%2C2045711%2C2052403%2C2053174%2C2054643%2C2054667%2C2054671%2C2054674%2C2054687%2C2054717%2C2054761%2C2054787%2C2055676%2C2056779%2C2056781%2C2058629%2C2059019%2C2059138\",\"source\":\"security@mozilla.org\"},{\"url\":\"https://bugzilla.mozilla.org/buglist.cgi?bug_id=2045796%2C2046734%2C2051424%2C2054721%2C2057994%2C2058094%2C2058611%2C2058615%2C2058616%2C2061315\",\"source\":\"security@mozilla.org\"},{\"url\":\"https://bugzilla.mozilla.org/buglist.cgi?bug_id=2053153%2C2053262%2C2054763%2C2059198%2C2059224\",\"source\":\"security@mozilla.org\"},{\"url\":\"https://www.mozilla.org/security/advisories/mfsa2026-74/\",\"source\":\"security@mozilla.org\"},{\"url\":\"https://www.mozilla.org/security/advisories/mfsa2026-77/\",\"source\":\"security@mozilla.org\"}]}}"
  }
}



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