Vulnerability-Lookup

CVE-2026-15718 (GCVE-0-2026-15718)

Vulnerability from cvelistv5 – Published: 2026-07-14 12:15 – Updated: 2026-07-22 19:19

Title

Invalid pointer in the JavaScript: WebAssembly component

Summary

We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 140.13, and Thunderbird 140.13.

Severity

4.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-763 - Release of Invalid Pointer or Reference

Assigner

mozilla

References

4 references

URL	Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=2045443
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

2 products

Vendor	Product	Version
Mozilla	Firefox	Unaffected: 140.13 , ≤ 140.* (rpm) Unaffected: 152.0.6 , ≤ * (rpm)
Mozilla	Thunderbird	Unaffected: 140.13 , ≤ * (rpm)

Credits

Christian Holler

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 4.3,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-15718",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-14T13:34:48.369595Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-763",
                "description": "CWE-763 Release of Invalid Pointer or Reference",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-14T13:35:17.223Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
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          "product": "Firefox",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThanOrEqual": "140.*",
              "status": "unaffected",
              "version": "140.13",
              "versionType": "rpm"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "152.0.6",
              "versionType": "rpm"
            }
          ]
        },
        {
          "product": "Thunderbird",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "140.13",
              "versionType": "rpm"
            }
          ]
        }
      ],
      "credits": [
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          "lang": "en",
          "value": "Christian Holler"
        }
      ],
      "descriptions": [
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          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 140.13, and Thunderbird 140.13."
            }
          ],
          "value": "We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 140.13, and Thunderbird 140.13."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-22T19:19:21.078Z",
        "orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
        "shortName": "mozilla"
      },
      "references": [
        {
          "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2045443"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-67/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-70/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-72/"
        }
      ],
      "title": "Invalid pointer in the JavaScript: WebAssembly component"
    }
  },
  "cveMetadata": {
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    "datePublished": "2026-07-14T12:15:46.176Z",
    "dateReserved": "2026-07-14T12:15:45.500Z",
    "dateUpdated": "2026-07-22T19:19:21.078Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-15718",
      "date": "2026-08-05",
      "epss": "0.00381",
      "percentile": "0.30809"
    },
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T21:23:23+00:00",
      "cve": "CVE-2026-15718",
      "id": "CVE-2026-15718",
      "initial_release_date": "2026-07-14T12:15:46.176000+00:00",
      "product_status:fixed": "82",
      "product_status:known_affected": "10",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "firefox: thunderbird: Invalid pointer in the JavaScript: WebAssembly component",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-15718.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-03T23:52:30Z",
      "cve": "CVE-2026-15718",
      "id": "CVE-2026-15718",
      "initial_release_date": "2026-07-15T05:35:53Z",
      "product_status:first_fixed": "8",
      "product_status:known_not_affected": "106",
      "product_status:recommended": "93",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-15718",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-15718.json",
      "version": "7"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 4.3, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"LOW\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-15718\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-07-14T13:34:48.369595Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-763\", \"description\": \"CWE-763 Release of Invalid Pointer or Reference\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-07-14T13:35:01.033Z\"}}], \"cna\": {\"title\": \"Invalid pointer in the JavaScript: WebAssembly component\", \"credits\": [{\"lang\": \"en\", \"value\": \"Christian Holler\"}], \"affected\": [{\"vendor\": \"Mozilla\", \"product\": \"Firefox\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"140.13\", \"versionType\": \"rpm\", \"lessThanOrEqual\": \"140.*\"}, {\"status\": \"unaffected\", \"version\": \"152.0.6\", \"versionType\": \"rpm\", \"lessThanOrEqual\": \"*\"}]}, {\"vendor\": \"Mozilla\", \"product\": \"Thunderbird\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"140.13\", \"versionType\": \"rpm\", \"lessThanOrEqual\": \"*\"}]}], \"references\": [{\"url\": \"https://bugzilla.mozilla.org/show_bug.cgi?id=2045443\"}, {\"url\": \"https://www.mozilla.org/security/advisories/mfsa2026-67/\"}, {\"url\": \"https://www.mozilla.org/security/advisories/mfsa2026-70/\"}, {\"url\": \"https://www.mozilla.org/security/advisories/mfsa2026-72/\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 140.13, and Thunderbird 140.13.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 140.13, and Thunderbird 140.13.\", \"base64\": false}]}], \"providerMetadata\": {\"orgId\": \"f16b083a-5664-49f3-a51e-8d479e5ed7fe\", \"shortName\": \"mozilla\", \"dateUpdated\": \"2026-07-22T19:19:21.078Z\"}}}",
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      "dataType": "CVE_RECORD",
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  }
}

WID-SEC-W-2026-2340

Vulnerability from csaf_certbund - Published: 2026-07-14 22:00 - Updated: 2026-07-21 22:00

Summary

Mozilla Firefox: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff

Severity

Mittel

Notes

Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.

Produktbeschreibung: Firefox ist ein Open Source Web Browser. ESR ist die Variante mit verlängertem Support.

Angriff: Ein Angreifer kann mehrere Schwachstellen in Mozilla Firefox ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.

Betroffene Betriebssysteme: - Sonstiges - UNIX - Windows

CVE-2026-15718

Affected products

Known affected 2 products

Product	Identifier	Version	Remediation
Mozilla Firefox <152.0.6 Mozilla / Firefox		<152.0.6
SUSE openSUSE SUSE	`cpe:/o:suse:opensuse:-`	—

CVE-2026-15719

Affected products

Known affected 2 products

Product	Identifier	Version	Remediation
Mozilla Firefox <152.0.6 Mozilla / Firefox		<152.0.6
SUSE openSUSE SUSE	`cpe:/o:suse:opensuse:-`	—

References

4 references

URL	Category
https://wid.cert-bund.de/.well-known/csaf/white/2…	self
https://wid.cert-bund.de/portal/wid/securityadvis…	self
https://www.mozilla.org/en-US/security/advisories…	external
https://lists.opensuse.org/archives/list/security…	external

JSON

To clipboard

{
  "document": {
    "aggregate_severity": {
      "text": "mittel"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "Firefox ist ein Open Source Web Browser. \r\nESR ist die Variante mit verl\u00e4ngertem Support.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein Angreifer kann mehrere Schwachstellen in Mozilla Firefox ausnutzen, um einen nicht n\u00e4her spezifizierten Angriff durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Sonstiges\n- UNIX\n- Windows",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2026-2340 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2340.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-2340 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2340"
      },
      {
        "category": "external",
        "summary": "Mozilla Security Advisory mfsa2026-67 vom 2026-07-14",
        "url": "https://www.mozilla.org/en-US/security/advisories/mfsa2026-67/"
      },
      {
        "category": "external",
        "summary": "openSUSE Security Update OPENSUSE-SU-2026:11311-1 vom 2026-07-21",
        "url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/HYMBD3ZTXB5UA5ZAYRL3AZZBAPYFF3OM/"
      }
    ],
    "source_lang": "en-US",
    "title": "Mozilla Firefox: Mehrere Schwachstellen erm\u00f6glichen nicht spezifizierten Angriff",
    "tracking": {
      "current_release_date": "2026-07-21T22:00:00.000+00:00",
      "generator": {
        "date": "2026-07-22T09:20:41.126+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-2340",
      "initial_release_date": "2026-07-14T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-07-14T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2026-07-21T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von openSUSE aufgenommen"
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c152.0.6",
                "product": {
                  "name": "Mozilla Firefox \u003c152.0.6",
                  "product_id": "T056555"
                }
              },
              {
                "category": "product_version",
                "name": "152.0.6",
                "product": {
                  "name": "Mozilla Firefox 152.0.6",
                  "product_id": "T056555-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:mozilla:firefox:152.0.6"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Firefox"
          }
        ],
        "category": "vendor",
        "name": "Mozilla"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "SUSE openSUSE",
            "product": {
              "name": "SUSE openSUSE",
              "product_id": "T055946",
              "product_identification_helper": {
                "cpe": "cpe:/o:suse:opensuse:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "SUSE"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-15718",
      "product_status": {
        "known_affected": [
          "T056555",
          "T055946"
        ]
      },
      "release_date": "2026-07-14T22:00:00.000+00:00",
      "title": "CVE-2026-15718"
    },
    {
      "cve": "CVE-2026-15719",
      "product_status": {
        "known_affected": [
          "T056555",
          "T055946"
        ]
      },
      "release_date": "2026-07-14T22:00:00.000+00:00",
      "title": "CVE-2026-15719"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2026-15718 (GCVE-0-2026-15718)

WID-SEC-W-2026-2340

Tags

Sightings

Nomenclature