High severity8.8CISA KEVNVD Advisory· Published Jul 30, 2025· Updated Apr 3, 2026

CVE-2025-31277

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Apple Inc./Safari2 versions
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*range: <18.6
- (no CPE)range: =18.6
Apple Inc./Ipados
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
Range: <18.6
Apple Inc./Iphone OS
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
Range: <18.6
Apple Inc./macOS
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
Range: >=15.0,<15.6
Apple Inc./tvOS
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
Range: <18.6
Apple Inc./Visionos
cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*
Range: <2.6
Apple Inc./watchOS
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
Range: <11.6
Cisco Systems, Inc./Cisco iOSllm-fuzzy
Range: =18.6
Apple Inc./macOS Sequoiallm-fuzzy
Range: =15.6
osv-coords46 versions
pkg:rpm/opensuse/webkit2gtk3&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/webkit2gtk3&distro=openSUSE%20Leap%2016.0 pkg:rpm/opensuse/webkit2gtk3-soup2&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/webkit2gtk3-soup2&distro=openSUSE%20Leap%2016.0 pkg:rpm/opensuse/webkit2gtk4&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/webkit2gtk4&distro=openSUSE%20Leap%2016.0 pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSS pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOS pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSS pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP7 pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSS pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSS pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSS pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%2016.0 pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4 pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5 pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP6 pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0 pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5 pkg:rpm/suse/webkit2gtk3-soup2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS pkg:rpm/suse/webkit2gtk3-soup2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSS pkg:rpm/suse/webkit2gtk3-soup2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOS pkg:rpm/suse/webkit2gtk3-soup2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSS pkg:rpm/suse/webkit2gtk3-soup2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7 pkg:rpm/suse/webkit2gtk3-soup2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS pkg:rpm/suse/webkit2gtk3-soup2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSS pkg:rpm/suse/webkit2gtk3-soup2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSS pkg:rpm/suse/webkit2gtk3-soup2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4 pkg:rpm/suse/webkit2gtk3-soup2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5 pkg:rpm/suse/webkit2gtk3-soup2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP6 pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSS pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOS pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSS pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7 pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7 pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSS pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSS pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20Server%2016.0 pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4 pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5 pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP6 pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0
< 2.52.1-150600.12.63.1+ 45 more
- (no CPE)range: < 2.52.1-150600.12.63.1
- (no CPE)range: < 2.52.1-160000.1.1
- (no CPE)range: < 2.52.1-150600.12.63.1
- (no CPE)range: < 2.52.1-160000.1.1
- (no CPE)range: < 2.52.1-150600.12.63.1
- (no CPE)range: < 2.52.1-160000.1.1
- (no CPE)range: < 2.52.0-150400.4.137.3
- (no CPE)range: < 2.52.0-150400.4.137.3
- (no CPE)range: < 2.52.0-150400.4.137.3
- (no CPE)range: < 2.52.0-150400.4.137.3
- (no CPE)range: < 2.52.1-150600.12.63.1
- (no CPE)range: < 2.52.0-4.54.1
- (no CPE)range: < 2.52.0-150400.4.137.3
- (no CPE)range: < 2.52.0-150400.4.137.3
- (no CPE)range: < 2.52.1-150600.12.63.1
- (no CPE)range: < 2.52.1-160000.1.1
- (no CPE)range: < 2.52.0-150400.4.137.3
- (no CPE)range: < 2.52.0-150400.4.137.3
- (no CPE)range: < 2.52.1-150600.12.63.1
- (no CPE)range: < 2.52.1-160000.1.1
- (no CPE)range: < 2.52.0-4.54.1
- (no CPE)range: < 2.52.0-150400.4.137.3
- (no CPE)range: < 2.52.0-150400.4.137.3
- (no CPE)range: < 2.52.0-150400.4.137.3
- (no CPE)range: < 2.52.0-150400.4.137.3
- (no CPE)range: < 2.52.1-150600.12.63.1
- (no CPE)range: < 2.52.0-150400.4.137.3
- (no CPE)range: < 2.52.0-150400.4.137.3
- (no CPE)range: < 2.52.1-150600.12.63.1
- (no CPE)range: < 2.52.0-150400.4.137.3
- (no CPE)range: < 2.52.0-150400.4.137.3
- (no CPE)range: < 2.52.1-150600.12.63.1
- (no CPE)range: < 2.52.0-150400.4.137.3
- (no CPE)range: < 2.52.0-150400.4.137.3
- (no CPE)range: < 2.52.0-150400.4.137.3
- (no CPE)range: < 2.52.0-150400.4.137.3
- (no CPE)range: < 2.52.1-150600.12.63.1
- (no CPE)range: < 2.52.1-150600.12.63.1
- (no CPE)range: < 2.52.0-150400.4.137.3
- (no CPE)range: < 2.52.0-150400.4.137.3
- (no CPE)range: < 2.52.1-150600.12.63.1
- (no CPE)range: < 2.52.1-160000.1.1
- (no CPE)range: < 2.52.0-150400.4.137.3
- (no CPE)range: < 2.52.0-150400.4.137.3
- (no CPE)range: < 2.52.1-150600.12.63.1
- (no CPE)range: < 2.52.1-160000.1.1

Patches

Vulnerability mechanics

References

seclists.org/fulldisclosure/2025/Aug/0nvdMailing ListThird Party Advisory
seclists.org/fulldisclosure/2025/Jul/30nvdMailing ListThird Party Advisory
seclists.org/fulldisclosure/2025/Jul/32nvdMailing ListThird Party Advisory
seclists.org/fulldisclosure/2025/Jul/36nvdMailing ListThird Party Advisory
support.apple.com/en-us/124147nvdRelease NotesVendor Advisory
support.apple.com/en-us/124149nvdRelease NotesVendor Advisory
support.apple.com/en-us/124152nvdRelease NotesVendor Advisory
support.apple.com/en-us/124153nvdRelease NotesVendor Advisory
support.apple.com/en-us/124154nvdRelease NotesVendor Advisory
support.apple.com/en-us/124155nvdRelease NotesVendor Advisory
cloud.google.com/blog/topics/threat-intelligence/darksword-ios-exploit-chain/nvdTechnical Description
www.cisa.gov/known-exploited-vulnerabilities-catalognvdUS Government Resource

News mentions

The Proliferation of DarkSword: iOS Exploit Chain Adopted by Multiple Threat Actors
Mandiant Threat Intelligence · Mar 18, 2026

cvss	0.572
epss	0.001
exploit	0.000
kev	0.120
patch	0.000
ransomware	0.000