CVE-2026-28947
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5,
02 Description
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5,
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 0.37% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 31.5% of scored records. A rank, not a probability.
- NVD base score
- 8.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-10-26.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-05-11 20:08Z5 MO AGO
- Last updated
- 2026-08-17 21:30Z2 MO AGO
- Reserved
- 2026-03-03
- Assigning CNA
- apple
- Record state
- PUBLISHED
- Severity
- High (CVSS 8.8)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-416Use After FreeVariant
- Data version
- 5.2
- Document digest
- 84aad307b88aa5c6e2f69832e7aa8da412e3cfd8832332c324e9a5dff554d03e
05 Affected products
06 References
- support.apple.comhttps://support.apple.com/en-us/127110
- support.apple.comhttps://support.apple.com/en-us/127115
- support.apple.comhttps://support.apple.com/en-us/127118
- support.apple.comhttps://support.apple.com/en-us/127119
- support.apple.comhttps://support.apple.com/en-us/127120
- support.apple.comhttps://support.apple.com/en-us/127121
- support.apple.comhttps://support.apple.com/en-us/148287
- access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-28947
- bugzilla.redhat.comRHBZ#2483964https://bugzilla.redhat.com/show_bug.cgi?id=2483964
- security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-28947.json
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:27728
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:25918
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:27785
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:28114
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:27804
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:28148
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:28146
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:28147
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:25927
07 Fixed in
AlmaLinux 8
- webkit2gtk3 Fixed in 2.52.4-1.el8_10
- webkit2gtk3-devel Fixed in 2.52.4-1.el8_10
- webkit2gtk3-jsc Fixed in 2.52.4-1.el8_10
- webkit2gtk3-jsc-devel Fixed in 2.52.4-1.el8_10
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
AlmaLinux 9
- webkit2gtk3 Fixed in 2.52.4-1.el9_8
- webkit2gtk3-devel Fixed in 2.52.4-1.el9_8
- webkit2gtk3-jsc Fixed in 2.52.4-1.el9_8
- webkit2gtk3-jsc-devel Fixed in 2.52.4-1.el9_8
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- webkit2gtk3 Fixed in 2.52.4-1.el8_10
- webkit2gtk3-devel Fixed in 2.52.4-1.el8_10
- webkit2gtk3-jsc Fixed in 2.52.4-1.el8_10
- webkit2gtk3-jsc-devel Fixed in 2.52.4-1.el8_10
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 9
- webkit2gtk3 Fixed in 2.52.4-1.el9_8
- webkit2gtk3-devel Fixed in 2.52.4-1.el9_8
- webkit2gtk3-jsc Fixed in 2.52.4-1.el9_8
- webkit2gtk3-jsc-devel Fixed in 2.52.4-1.el9_8
Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- webkit2gtk No fix yet
- wpewebkit No fix yet
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- webkit2gtk Fixed in 2.52.5-1~deb13u1
- wpewebkit No fix yet
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- webkit2gtk Fixed in 2.52.4-1
- wpewebkit Fixed in 2.52.4-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- qtwebkit-opensource-src No fix yet
- qtwebkit-source No fix yet
- webkit2gtk No fix yet
- webkitgtk No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- qtwebkit-opensource-src No fix yet
- qtwebkit-source No fix yet
- webkit2gtk No fix yet
- webkitgtk No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- qtwebkit-opensource-src No fix yet
- webkit2gtk No fix yet
- wpewebkit No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- qtwebkit-opensource-src No fix yet
- webkit2gtk No fix yet
- wpewebkit No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- qtwebkit-opensource-src No fix yet
- webkit2gtk Fixed in 2.52.6-0ubuntu0.24.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 26.04 LTS
- webkit2gtk Fixed in 2.52.6-0ubuntu0.26.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.