CVE-2025-1934

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{"affected": [{"affectedData": [{"product": "Firefox", "vendor": "Mozilla", "versions": [{"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": "51A0498A-4BF8-4166-A347-78023C0A6B33", "versionEndExcluding": "128.8.0", "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: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 interrupt the processing of a RegExp bailout and run additional JavaScript, potentially triggering garbage collection when the engine was not expecting it. This vulnerability was fixed in Firefox 136, Firefox ESR 128.8, Thunderbird 136, and Thunderbird 128.8."}, {"lang": "es", "value": "Se pudo interrumpir el procesamiento de un rescate de RegExp y ejecutar JavaScript adicional, lo que podr\u00eda activar la recolecci\u00f3n de basura cuando el motor no lo esperaba. Esta vulnerabilidad afecta a Firefox menor que 136, Firefox ESR menor que 128.8, Thunderbird menor que 136 y Thunderbird menor que 128.8."}], "id": "CVE-2025-1934", "lastModified": "2026-10-05T15:10:00.590", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-1934", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-03-04T15:50:25.693188Z", "version": "2.0.3"}}]}, "published": "2025-03-04T14:15:38.273", "references": [{"source": "security@mozilla.org", "tags": ["Issue Tracking", "Permissions Required"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1942881"}, {"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/mfsa2025-16/"}, {"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": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"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: Unexpected GC during RegExp bailout processing", "id": "2349790", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2349790"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-460", "details": ["It was possible to interrupt the processing of a RegExp bailout and run additional JavaScript, potentially triggering garbage collection when the engine was not expecting it. This vulnerability affects Firefox < 136, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird < 128.8.", "A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: It was possible to interrupt the processing of a RegExp bailout and run additional JavaScript, potentially triggering garbage collection when the engine was not expecting it."], "name": "CVE-2025-1934", "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": "2025-03-04T13:31:24Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-1934\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-1934\nhttps://bugzilla.mozilla.org/show_bug.cgi?id=1942881\nhttps://www.mozilla.org/security/advisories/mfsa2025-14/\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": "Moderate"}

{"analysis": {"en": {"generated_at": "2026-04-20T23:41:11.305227+00:00", "value": {"mitigation_remediation": ["Upgrade Mozilla Firefox to version\u202f136 or the ESR\u202f128.8 release, or later.", "Upgrade Mozilla Thunderbird to version\u202f136 or the ESR\u202f128.8 release, or later.", "If an upgrade cannot be performed immediately, reduce the execution of arbitrary JavaScript in the affected environment by applying Content Security Policy or similar restrictions to limit scripts that can run RegExp patterns.", "Monitor affected systems for memory\u2011related crashes or abnormal garbage collection activity after applying the update or mitigation."], "summary": {"action": "Patch", "impact": "Unintended garbage collection during RegExp bailout may lead to memory corruption or denial of service"}, "threat_synthesis": {"affected_systems": "Mozilla Firefox versions earlier than 136 and the ESR 128.8 release, as well as Mozilla Thunderbird versions earlier than 136 and the ESR 128.8 release, are affected. Systems that ship these browsers may be impacted if the vulnerable JavaScript engine is present. Based on the provided CPE data, systems running Red\u00a0Hat Enterprise Linux 8 or 9 that include the affected Firefox or Thunderbird installations may also be impacted; this inference is derived from the CPEs.", "description_and_impact": "The vulnerability allows an attacker to interrupt the JavaScript RegExp bailout process and run additional script code, which can inadvertently trigger garbage collection when the engine is not expecting it. This unexpected GC can lead to memory corruption or cause the browser or mail client to crash, effectively resulting in a denial of service. The weakness is enumerated as a logic or design error (CWE\u2011460).", "risk_and_exploitability": "The CVSS base score of 6.5 denotes medium severity. EPSS <1% indicates a low likelihood of widespread exploitation. The vulnerability is not listed in CISA KEV, suggesting no confirmed public exploits. The likely attack vector is via malicious web pages or email attachments that load JavaScript containing a RegExp pattern designed to interrupt the bailout, causing unexpected garbage collection and a potential denial of service. Exploitation requires only a vulnerable JavaScript engine and delivery of the crafted script; no special privileges are needed."}}}}, "created": "2026-04-20T23:45:21.607216+00:00", "updated": "2026-04-20T23:45:21.607227+00:00", "vendors": []}