CVE-2025-1931

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{"affected": [{"affectedData": [{"product": "Firefox", "vendor": "Mozilla", "versions": [{"lessThanOrEqual": "115.*", "status": "unaffected", "version": "115.21", "versionType": "rpm"}, {"lessThanOrEqual": "128.*", "status": "unaffected", "version": "128.8", "versionType": "rpm"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "136", "versionType": "rpm"}]}, {"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"lessThanOrEqual": "128.*", "status": "unaffected", "version": "128.8", "versionType": "rpm"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "136", "versionType": "rpm"}]}], "source": "security@mozilla.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*", "matchCriteriaId": "68BC8333-E840-48AF-A5A1-44D7D74F244A", "versionEndExcluding": "115.21.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*", "matchCriteriaId": "7DB4CDD0-EC54-43D0-ACB2-F159ABA53D2C", "versionEndExcluding": "136.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*", "matchCriteriaId": "4F666780-2794-46E3-86C5-3C0406FB2B34", "versionEndExcluding": "128.8.0", "versionStartIncluding": "116.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*", "matchCriteriaId": "D3C5A2B6-C7B5-4888-B0A7-9DA0C3024C71", "versionEndExcluding": "128.8.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*", "matchCriteriaId": "93C81C9D-FC2E-4D7D-A97F-8DB97ED92192", "versionEndExcluding": "136.0", "versionStartIncluding": "129.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "It was possible to cause a use-after-free in the content process side of a WebTransport connection, leading to a potentially exploitable crash. This vulnerability was fixed in Firefox 136, Firefox ESR 115.21, Firefox ESR 128.8, Thunderbird 136, and Thunderbird 128.8."}, {"lang": "es", "value": "Se pudo provocar un use-after-free en el lado del proceso de contenido de una conexi\u00f3n WebTransport, lo que provoc\u00f3 un bloqueo potencialmente explotable. Esta vulnerabilidad afecta a Firefox menor que 136, Firefox ESR menor que 115.21, Firefox ESR menor que 128.8, Thunderbird menor que 136 y Thunderbird menor que 128.8."}], "id": "CVE-2025-1931", "lastModified": "2026-10-05T15:10:00.590", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-1931", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-03-26T19:54:21.578467Z", "version": "2.0.3"}}]}, "published": "2025-03-04T14:15:37.963", "references": [{"source": "security@mozilla.org", "tags": ["Issue Tracking"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1944126"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2025-14/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2025-15/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2025-16/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2025-17/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2025-18/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00006.html"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2025:2699", "cpe": "cpe:/o:redhat:rhel_els:7", "package": "firefox-0:128.8.0-1.el7_9", "product_name": "Red Hat Enterprise Linux 7 Extended Lifecycle Support", "release_date": "2025-03-13T00:00:00Z"}, {"advisory": "RHSA-2025:2452", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "firefox-0:128.8.0-1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2025-03-06T00:00:00Z"}, {"advisory": "RHSA-2025:2708", "cpe": "cpe:/a:redhat:rhel_aus:8.2", "package": "firefox-0:128.8.0-1.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Advanced Update Support", "release_date": "2025-03-13T00:00:00Z"}, {"advisory": "RHSA-2025:2484", "cpe": "cpe:/a:redhat:rhel_aus:8.4", "package": "firefox-0:128.8.0-1.el8_4", "product_name": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support", "release_date": "2025-03-10T00:00:00Z"}, {"advisory": "RHSA-2025:2484", "cpe": "cpe:/a:redhat:rhel_tus:8.4", "package": "firefox-0:128.8.0-1.el8_4", "product_name": "Red Hat Enterprise Linux 8.4 Telecommunications Update Service", "release_date": "2025-03-10T00:00:00Z"}, {"advisory": "RHSA-2025:2484", "cpe": "cpe:/a:redhat:rhel_e4s:8.4", "package": "firefox-0:128.8.0-1.el8_4", "product_name": "Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions", "release_date": "2025-03-10T00:00:00Z"}, {"advisory": "RHSA-2025:2485", "cpe": "cpe:/a:redhat:rhel_aus:8.6", "package": "firefox-0:128.8.0-1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "release_date": "2025-03-10T00:00:00Z"}, {"advisory": "RHSA-2025:2485", "cpe": "cpe:/a:redhat:rhel_tus:8.6", "package": "firefox-0:128.8.0-1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Telecommunications Update Service", "release_date": "2025-03-10T00:00:00Z"}, {"advisory": "RHSA-2025:2485", "cpe": "cpe:/a:redhat:rhel_e4s:8.6", "package": "firefox-0:128.8.0-1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions", "release_date": "2025-03-10T00:00:00Z"}, {"advisory": "RHSA-2025:2486", "cpe": "cpe:/a:redhat:rhel_eus:8.8", "package": "firefox-0:128.8.0-1.el8_8", "product_name": "Red Hat Enterprise Linux 8.8 Extended Update Support", "release_date": "2025-03-10T00:00:00Z"}, {"advisory": "RHSA-2025:2359", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "firefox-0:128.8.0-1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-03-05T00:00:00Z"}, {"advisory": "RHSA-2025:2481", "cpe": "cpe:/a:redhat:rhel_e4s:9.0", "package": "firefox-0:128.8.0-1.el9_0", "product_name": "Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions", "release_date": "2025-03-10T00:00:00Z"}, {"advisory": "RHSA-2025:2480", "cpe": "cpe:/a:redhat:rhel_eus:9.2", "package": "firefox-0:128.8.0-1.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2025-03-10T00:00:00Z"}, {"advisory": "RHSA-2025:2479", "cpe": "cpe:/a:redhat:rhel_eus:9.4", "package": "firefox-0:128.8.0-1.el9_4", "product_name": "Red Hat Enterprise Linux 9.4 Extended Update Support", "release_date": "2025-03-10T00:00:00Z"}], "bugzilla": {"description": "firefox: Use-after-free in WebTransportChild", "id": "2349786", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2349786"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.6", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H", "status": "verified"}, "cwe": "CWE-416", "details": ["It was possible to cause a use-after-free in the content process side of a WebTransport connection, leading to a potentially exploitable crash. This vulnerability affects Firefox < 136, Firefox ESR < 115.21, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird < 128.8."], "name": "CVE-2025-1931", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "firefox-flatpak-container", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "firefox-flatpak-container", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-03-04T13:31:23Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-1931\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-1931\nhttps://bugzilla.mozilla.org/show_bug.cgi?id=1944126\nhttps://www.mozilla.org/security/advisories/mfsa2025-14/\nhttps://www.mozilla.org/security/advisories/mfsa2025-15/\nhttps://www.mozilla.org/security/advisories/mfsa2025-16/"], "statement": "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.", "threat_severity": "Important"}

{"analysis": {"en": {"generated_at": "2026-04-20T23:42:08.095293+00:00", "value": {"mitigation_remediation": ["Upgrade Firefox to version\u202f136 or later, or to ESR 115.21/128.8 or later", "Upgrade Thunderbird to version\u202f136 or later, or to ESR 115.21/128.8 or later", "On Red\u202fHat Enterprise Linux systems, update the package that contains Thunderbird or Firefox to the latest version that includes the patch"], "summary": {"action": "Update immediately", "impact": "Application crash with potential for arbitrary code execution"}, "threat_synthesis": {"affected_systems": "Mozilla Firefox versions 136 and all earlier releases, including Extended Support Release 115.21 and 128.8, are vulnerable. Mozilla Thunderbird versions 136 and all earlier releases, including ESR 115.21 and 128.8, are also affected. Additionally, older, bundled Mozilla binaries found on Red\u202fHat Enterprise Linux 8, 9 and other Red\u202fHat derivatives are impacted by these vulnerable versions.", "description_and_impact": "The vulnerability is a Use\u2011After\u2011Free in the content process side of a WebTransport connection within Mozilla Firefox and Thunderbird. It occurs when a WebTransport object is freed yet later accessed, leading to a crash. The description indicates that the crash is potentially exploitable, meaning that under certain memory conditions an attacker could trigger the bug to execute arbitrary code on the system. This memory corruption flaw is classified as CWE\u2011416.", "risk_and_exploitability": "The CVSS score of 7.5 indicates high severity, while the EPSS score of less than 1% suggests a low likelihood of exploitation at present. The vulnerability is not listed in CISA KEV. Based on the description, it is inferred that an attacker could trigger the flaw by loading malicious content that initiates a WebTransport connection, potentially from a remote web page. The risk is therefore a high\u2011severity crash with the possibility of remote code execution under the right conditions."}}}}, "created": "2026-04-20T23:45:21.607906+00:00", "updated": "2026-04-20T23:45:21.607915+00:00", "vendors": []}