High severity8.8NVD Advisory· Published May 11, 2026· Updated May 22, 2026

CVE-2026-28955

Description

The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5, iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. Processing maliciously crafted web content may lead to an unexpected process crash.

AI Insight

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

Affected products

Apple Inc./TVllm-fuzzy
Range: <=26.5
Apple Inc./Safarillm-fuzzy
Range: <=26.5
Cisco Systems, Inc./Cisco iOSllm-fuzzy
Range: <=18.7.9
osv-coords33 versions
pkg:rpm/almalinux/webkit2gtk3 pkg:rpm/almalinux/webkit2gtk3-devel pkg:rpm/almalinux/webkit2gtk3-jsc pkg:rpm/almalinux/webkit2gtk3-jsc-devel 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%20SP5-ESPOS pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP7 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%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-soup2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS pkg:rpm/suse/webkit2gtk3-soup2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOS 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%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%20SP5-ESPOS 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%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
< 2.52.4-1.el8_10+ 32 more
- (no CPE)range: < 2.52.4-1.el8_10
- (no CPE)range: < 2.52.4-1.el8_10
- (no CPE)range: < 2.52.4-1.el8_10
- (no CPE)range: < 2.52.4-1.el8_10
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150600.12.68.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150600.12.68.1
- (no CPE)range: < 2.52.4-160000.1.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150600.12.68.1
- (no CPE)range: < 2.52.4-160000.1.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150600.12.68.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150600.12.68.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150600.12.68.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150600.12.68.1
- (no CPE)range: < 2.52.4-150600.12.68.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150600.12.68.1
- (no CPE)range: < 2.52.4-160000.1.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150600.12.68.1
- (no CPE)range: < 2.52.4-160000.1.1

Patches

Vulnerability mechanics

References

support.apple.com/en-us/127110nvdRelease NotesVendor Advisory
support.apple.com/en-us/127111nvdRelease NotesVendor Advisory
support.apple.com/en-us/127115nvdRelease NotesVendor Advisory
support.apple.com/en-us/127118nvdRelease NotesVendor Advisory
support.apple.com/en-us/127119nvdRelease NotesVendor Advisory
support.apple.com/en-us/127120nvdRelease NotesVendor Advisory
support.apple.com/en-us/127121nvd
www.zerodayinitiative.com/advisories/ZDI-26-312/nvd

News mentions

ZDI-26-312: Apple Safari Web Inspector WebCore Style Resolver Use-After-Free Remote Code Execution Vulnerability
Zero Day Initiative · May 12, 2026

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