CVE-2025-43438

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This issue is fixed in Safari 26.1, iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, visionOS 26.1, watchOS 26.1. Processing maliciously crafted web content may lead to an unexpected Safari crash."}, {"lang": "es", "value": "Un problema de uso despu\u00e9s de liberaci\u00f3n se abord\u00f3 con una gesti\u00f3n de memoria mejorada. Este problema est\u00e1 corregido en iOS 18.7.2 y iPadOS 18.7.2. El procesamiento de contenido web elaborado maliciosamente puede provocar un cierre inesperado de Safari."}], "id": "CVE-2025-43438", "lastModified": "2026-09-26T00:10:00.127", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.3, "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:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-43438", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2025-11-15T04:56:21.407322Z", "version": "2.0.3"}}]}, "published": "2025-11-04T02:15:49.563", "references": [{"source": "product-security@apple.com", "url": "https://support.apple.com/en-us/125632"}, {"source": "product-security@apple.com", "url": "https://support.apple.com/en-us/125633"}, {"source": "product-security@apple.com", "url": "https://support.apple.com/en-us/125634"}, {"source": "product-security@apple.com", "url": "https://support.apple.com/en-us/125638"}, {"source": "product-security@apple.com", "url": "https://support.apple.com/en-us/125639"}, {"source": "product-security@apple.com", "url": "https://support.apple.com/en-us/125640"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2025:22789"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2025:22790"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/security/cve/CVE-2025-43438"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2448784"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-43438.json"}], "sourceIdentifier": "product-security@apple.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-416"}], "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2025:23583", "cpe": "cpe:/o:redhat:rhel_els:7", "package": "webkitgtk4-0:2.50.3-2.el7_9", "product_name": "Red Hat Enterprise Linux 7 Extended Lifecycle Support", "release_date": "2025-12-18T00:00:00Z"}, {"advisory": "RHSA-2025:22789", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "webkit2gtk3-0:2.50.3-1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2025-12-08T00:00:00Z"}, {"advisory": "RHSA-2025:23433", "cpe": "cpe:/a:redhat:rhel_aus:8.2", "package": "webkit2gtk3-0:2.50.3-2.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Advanced Update Support", "release_date": "2025-12-17T00:00:00Z"}, {"advisory": "RHSA-2025:23434", "cpe": "cpe:/a:redhat:rhel_aus:8.4", "package": "webkit2gtk3-0:2.50.3-2.el8_4", "product_name": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support", "release_date": "2025-12-17T00:00:00Z"}, {"advisory": "RHSA-2025:23434", "cpe": "cpe:/a:redhat:rhel_eus_long_life:8.4", "package": "webkit2gtk3-0:2.50.3-2.el8_4", "product_name": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On", "release_date": "2025-12-17T00:00:00Z"}, {"advisory": "RHSA-2025:23743", "cpe": "cpe:/a:redhat:rhel_aus:8.6", "package": "webkit2gtk3-0:2.50.3-2.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "release_date": "2025-12-22T00:00:00Z"}, {"advisory": "RHSA-2025:23743", "cpe": "cpe:/a:redhat:rhel_tus:8.6", "package": "webkit2gtk3-0:2.50.3-2.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Telecommunications Update Service", "release_date": "2025-12-22T00:00:00Z"}, {"advisory": "RHSA-2025:23743", "cpe": "cpe:/a:redhat:rhel_e4s:8.6", "package": "webkit2gtk3-0:2.50.3-2.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions", "release_date": "2025-12-22T00:00:00Z"}, {"advisory": "RHSA-2025:23742", "cpe": "cpe:/a:redhat:rhel_tus:8.8", "package": "webkit2gtk3-0:2.50.3-2.el8_8", "product_name": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service", "release_date": "2025-12-22T00:00:00Z"}, {"advisory": "RHSA-2025:23742", "cpe": "cpe:/a:redhat:rhel_e4s:8.8", "package": "webkit2gtk3-0:2.50.3-2.el8_8", "product_name": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions", "release_date": "2025-12-22T00:00:00Z"}, {"advisory": "RHSA-2025:22790", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "webkit2gtk3-0:2.50.3-1.el9_7", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-12-08T00:00:00Z"}, {"advisory": "RHSA-2025:23452", "cpe": "cpe:/a:redhat:rhel_e4s:9.0", "package": "webkit2gtk3-0:2.50.3-1.el9_0", "product_name": "Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions", "release_date": "2025-12-17T00:00:00Z"}, {"advisory": "RHSA-2025:23451", "cpe": "cpe:/a:redhat:rhel_e4s:9.2", "package": "webkit2gtk3-0:2.50.3-1.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "release_date": "2025-12-17T00:00:00Z"}, {"advisory": "RHSA-2025:23591", "cpe": "cpe:/a:redhat:rhel_eus:9.4", "package": "webkit2gtk3-0:2.50.3-1.el9_4", "product_name": "Red Hat Enterprise Linux 9.4 Extended Update Support", "release_date": "2025-12-18T00:00:00Z"}, {"advisory": "RHSA-2025:23110", "cpe": "cpe:/a:redhat:rhel_eus:9.6", "package": "webkit2gtk3-0:2.50.3-1.el9_6", "product_name": "Red Hat Enterprise Linux 9.6 Extended Update Support", "release_date": "2025-12-11T00:00:00Z"}], "bugzilla": {"description": "webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash", "id": "2448784", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2448784"}, "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-416", "details": ["A use-after-free issue was addressed with improved memory management. This issue is fixed in watchOS 26.1, macOS Tahoe 26.1, iOS 26.1 and iPadOS 26.1, Safari 26.1, iOS 18.7.2 and iPadOS 18.7.2, visionOS 26.1. Processing maliciously crafted web content may lead to an unexpected Safari crash.", "A flaw was found in WebKitGTK. Processing malicious web content can cause a use-after-free issue due to improper memory management and result in an unexpected process crash."], "mitigation": {"lang": "en:us", "value": "Do not process or load untrusted web content with WebKitGTK.\nIn Red Hat Enterprise Linux 7, the following packages require WebKitGTK4: evolution-data-server, glade, gnome-boxes, gnome-initial-setup, gnome-online-accounts, gnome-shell, shotwell, sushi and yelp.\nThis vulnerability can only be exploited when these packages are installed in the system and being used via a graphical interface to process untrusted web content, via GNOME for example. In gnome-shell, the vulnerability can be exploited by an attacker from the local network without user interaction.\nTo mitigate this vulnerability, consider removing these packages. Note that some of these packages are required by GNOME, removing them will also remove GNOME and other packages, breaking functionality. However, the server can still be used via the terminal interface.\nAdditionally, WebKitGTK3 is not required by any package. Therefore, it can be removed without consequences or break of functionality."}, "name": "CVE-2025-43438", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "webkitgtk", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "webkitgtk3", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2026-03-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-43438\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-43438\nhttps://webkitgtk.org/security/WSA-2026-0001.html"], "statement": "To exploit this issue, an attacker needs to trick a user into processing or loading malicious web content. Due to this reason, this flaw has been rated with an important severity.\nAdditionally, this issue can cause an unexpected process crash but the possibility of remote code execution is not discarded.", "threat_severity": "Important"}

{"analysis": {"en": {"generated_at": "2026-04-22T21:35:06.306632+00:00", "value": {"mitigation_remediation": ["Apply the latest Apple software updates that include Safari 26.1 or later, ensuring all operating systems (iOS, iPadOS, macOS, visionOS, watchOS) are updated to the corresponding patched release.", "If an update cannot be applied immediately, monitor for Safari crashes and review crash logs for patterns indicating exploitation attempts.", "Implement network\u2011level content filtering or browser security settings to block or sandbox untrusted web content as a temporary mitigant until the patch is deployed."], "summary": {"action": "Apply Patch", "impact": "Application crash / denial of service via Safari"}, "threat_synthesis": {"affected_systems": "Apple products such as Safari, iOS, iPadOS, macOS, visionOS, and watchOS are affected. The fix is included in Safari 26.1 and iOS/iPadOS 18.7.2 (and equivalent 26.1 releases). Those running earlier releases without this patch remain vulnerable.", "description_and_impact": "A use\u2011after\u2011free bug in WebKitGTK\u2019s memory handling is triggered by maliciously crafted web content, causing Safari to crash unexpectedly. The vulnerability is limited to an instability that results in a fatal error without any direct exploitation of code execution or data exfiltration. Affected users experience a denial of service when the browser terminates. The weakness is classified as CWE\u2011416 (Use\u2011After\u2011Free).", "risk_and_exploitability": "The CVSS score of 4.3 reflects moderate severity, and an EPSS score of less than 1% indicates a very low likelihood of exploitation in the wild. The vulnerability is not listed in CISA\u2019s KEV catalog, suggesting no known widespread exploitation. Attackers can trigger the crash by serving specially crafted web content to a user\u2019s Safari. While the bug does not provide privilege escalation or data theft, the crash can disrupt availability and serve as a vector for denial of service. Given the low EPSS and absence from KEV, immediate risk to large\u2011scale attacks is low, but the impact on end users is measurable in the form of unexpected browser termination."}}}}, "created": "2025-11-04T16:34:23.055089+00:00", "updated": "2026-04-22T21:45:06.286206+00:00", "vendors": ["apple", "apple$PRODUCT$ios", "apple$PRODUCT$ipad_os", "apple$PRODUCT$safari", "apple$PRODUCT$visionos", "apple$PRODUCT$watch_os"]}