CVE-2025-1937

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{"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-2025:2900", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "thunderbird-0:128.8.0-2.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2025-03-17T00:00:00Z"}, {"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-2025:2960", "cpe": "cpe:/a:redhat:rhel_aus:8.2", "package": "thunderbird-0:128.8.0-2.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Advanced Update Support", "release_date": "2025-03-17T00:00:00Z"}, {"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-2025:3009", "cpe": "cpe:/a:redhat:rhel_aus:8.4", "package": "thunderbird-0:128.8.0-2.el8_4", "product_name": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support", "release_date": "2025-03-18T00:00:00Z"}, {"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-2025:3009", "cpe": "cpe:/a:redhat:rhel_tus:8.4", "package": "thunderbird-0:128.8.0-2.el8_4", "product_name": "Red Hat Enterprise Linux 8.4 Telecommunications Update 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"2025-03-10T00:00:00Z"}, {"advisory": "RHSA-2025:3013", "cpe": "cpe:/a:redhat:rhel_e4s:9.0", "package": "thunderbird-0:128.8.0-2.el9_0", "product_name": "Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions", "release_date": "2025-03-18T00:00:00Z"}, {"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-2025:2959", "cpe": "cpe:/a:redhat:rhel_eus:9.2", "package": "thunderbird-0:128.8.0-2.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2025-03-17T00:00:00Z"}, {"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"}, {"advisory": "RHSA-2025:2957", "cpe": "cpe:/a:redhat:rhel_eus:9.4", "package": "thunderbird-0:128.8.0-2.el9_4", "product_name": "Red Hat Enterprise Linux 9.4 Extended Update Support", "release_date": "2025-03-17T00:00:00Z"}], "bugzilla": {"description": "firefox: thunderbird: Memory safety bugs fixed in Firefox 136, Thunderbird 136, Firefox ESR 115.21, Firefox ESR 128.8, and Thunderbird 128.8", "id": "2349795", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2349795"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-120", "details": ["Memory safety bugs present in Firefox 135, Thunderbird 135, Firefox ESR 115.20, Firefox ESR 128.7, and Thunderbird 128.7. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 136, Firefox ESR < 115.21, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird < 128.8."], "name": "CVE-2025-1937", "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": "Not affected", "package_name": "firefox-flatpak-container", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "thunderbird-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:6", "fix_state": "Out of support scope", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "firefox-flatpak-container", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "thunderbird-flatpak-container", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-03-04T13:31:26Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-1937\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-1937\nhttps://bugzilla.mozilla.org/buglist.cgi?bug_id=1938471%2C1940716\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": "2026-04-20T23:40:34.594036+00:00", "value": {"mitigation_remediation": ["Update all affected Mozilla Firefox and Thunderbird installations to the patched releases (Firefox 136 or ESR 115.21/128.8, Thunderbird 136 or ESR 128.8), including those running on Red\u00a0Hat Enterprise Linux 8 and 9.", "On Red\u00a0Hat Enterprise Linux systems, enable the appropriate security channels or repositories to receive the updated Firefox and Thunderbird packages automatically.", "If an upgrade cannot be performed immediately, apply application-level sandboxing and restrict browsing to safe domains, disabling any features that can trigger the memory bugs until a patch is available."], "summary": {"action": "Apply Patch", "impact": "Arbitrary code execution via memory corruption"}, "threat_synthesis": {"affected_systems": "The affected products are Mozilla Firefox and Mozilla Thunderbird. Vulnerable versions include Firefox 135, Thunderbird 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird ESR 128.7. These products can run on Windows, macOS, Linux, and specifically on Red\u00a0Hat Enterprise Linux 8 and 9 distributions (including RHEL AUS, E4S, EU S, TUS, and EL S variants) where the pre\u2011fixed versions are installed. Any installation running one of these pre\u2011fixed versions, regardless of the operating system, is at risk.", "description_and_impact": "Memory safety bugs were identified in Firefox 135 and Thunderbird 135, as well as in various ESR releases including Firefox ESR 115.20 and 128.7, and Thunderbird ESR 128.7. The flaws involve improper handling of memory, leading to corruption that could, with sufficient effort, enable an attacker to execute arbitrary code. The weaknesses are classified as CWE-120 (Buffer Copy without Length Checks) and CWE-1260 (Uncontrolled Buffer Size). The impact is the potential compromise of the host system through remote code execution.", "risk_and_exploitability": "The CVSS score of 7.5 indicates a high severity. EPSS is reported as <1%, suggesting a low current exploitation probability, but the memory corruption nature still allows the possibility of remote code execution through privileged browser actions. The vulnerability is not listed in the CISA KEV catalog. Attackers are likely to target the vulnerability via malicious web content or compromised local applications that can trigger the memory defects, though the specific attack vector is not explicitly stated in the available description and is inferred to be remote."}}}}, "created": "2026-04-20T23:45:21.606965+00:00", "updated": "2026-04-20T23:45:21.606976+00:00", "vendors": []}