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High 8.8Known exploited (CISA KEV)Published Jul 29, 2025
CVE-2025-31277The issue was addressed with improved memory handling.
Updated under an hour ago ()
Does this affect you?
It affects Apple Safari and 21 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Mar 20, 2026; federal agencies had to remediate by Apr 3, 2026. Treat that date as your deadline.
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The issue was addressed with improved memory handling. This issue is fixed in Safari 18.6, iOS 18.6 and iPadOS 18.6, macOS Sequoia 15.6, tvOS 18.6, visionOS 2.6, watchOS 11.6. Processing maliciously crafted web content may lead to memory corruption.
- CVSS
- 8.8 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-119, CWE-120
- Known exploited
- Added to CISA KEV Mar 20, 2026; federal remediation due Apr 3, 2026Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- EPSS (exploitation in the next 30 days)
- 1.60% (percentile 75)
- Assigned by
- apple
- NVD analysis
- Analyzed
- Record last updated
- Sep 21, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Apple Safari apple:safari (from the name) | before 18.6 | CNA record |
Apple iOS and iPadOS apple:ios_and_ipados (from the name) | before 18.6 | CNA record |
Apple macOS apple:macos (from the name) | before 15.6 | CNA record |
Apple tvOS apple:tvos (from the name) | before 18.6 | CNA record |
Apple visionOS apple:visionos (from the name) | before 2.6 | CNA record |
Apple watchOS apple:watchos (from the name) | before 11.6 | CNA record |
from 0:2.50.0-1.el7_9 not affected | CISA ADP | |
Red Hat Red Hat Enterprise Linux 8 redhat:enterprise_linux | from 0:2.50.0-1.el8_10 not affected | CISA ADP |
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support redhat:rhel_aus | from 0:2.50.0-1.el8_2 not affected | CISA ADP |
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On redhat:rhel_eus_long_life | from 0:2.50.0-1.el8_4 not affected | CISA ADP |
from 0:2.50.0-1.el8_6 not affected | CISA ADP | |
from 0:2.50.0-1.el8_6 not affected | CISA ADP | |
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support redhat:rhel_eus | from 0:2.50.0-2.el9_4 not affected | CISA ADP |
apple safari apple:safari | before 18.6 | NVD |
apple ipados apple:ipados | before 18.6 | NVD |
apple iphone_os apple:iphone_os | before 18.6 | NVD |
apple macos apple:macos | from 15.0 before 15.6 | NVD |
apple tvos apple:tvos | before 18.6 | NVD |
apple visionos apple:visionos | before 2.6 | NVD |
apple watchos apple:watchos | before 11.6 | NVD |
webkitgtk webkitgtk webkitgtk:webkitgtk | before 2.50.0 | NVD |
wpewebkit wpe_webkit wpewebkit:wpe_webkit | before 2.50.0 | NVD |
redhat enterprise_linux redhat:enterprise_linux | 6.0; 7.0; 8.0; 9.0 | NVD |
redhat enterprise_linux_aus redhat:enterprise_linux_aus | 8.2; 8.4; 8.6 | NVD |
redhat enterprise_linux_els redhat:enterprise_linux_els | 7.0 | NVD |
redhat enterprise_linux_eus redhat:enterprise_linux_eus | 8.4; 8.6; 9.4 | NVD |
redhat enterprise_linux_tus redhat:enterprise_linux_tus | 8.6; 8.8 | NVD |
redhat enterprise_linux_update_services_for_sap_solutions redhat:enterprise_linux_update_services_for_sap_solutions | 8.6; 8.8; 9.0; 9.2 | NVD |
References
- https://support.apple.com/en-us/124147release-notes, vendor-advisory
- https://support.apple.com/en-us/124149release-notes, vendor-advisory
- https://support.apple.com/en-us/124152release-notes, vendor-advisory
- https://support.apple.com/en-us/124153release-notes, vendor-advisory
- https://support.apple.com/en-us/124154release-notes, vendor-advisory
- https://support.apple.com/en-us/124155release-notes, vendor-advisory
- http://seclists.org/fulldisclosure/2025/Aug/0mailing-list, third-party-advisory
- http://seclists.org/fulldisclosure/2025/Jul/30mailing-list, third-party-advisory
- http://seclists.org/fulldisclosure/2025/Jul/32mailing-list, third-party-advisory
- http://seclists.org/fulldisclosure/2025/Jul/36mailing-list, third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:17643third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:17741third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:17743third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:17802third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:17807third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:18097third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:19109third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:19157third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:19165third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:19352third-party-advisory
- https://access.redhat.com/security/cve/CVE-2025-31277third-party-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2448780third-party-advisory
- https://cloud.google.com/blog/topics/threat-intelligence/darksword-ios-exploit-chain/technical-description
- https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-31277.jsonthird-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-31277us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.