CVE-2026-64778
The issue was addressed with improved checks. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, watchOS 27.
02 Description
The issue was addressed with improved checks. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, watchOS 27.
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 ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.33% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 27.0% of scored records. A rank, not a probability.
- NVD base score
- 6.5 (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:N/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-09-14.
- Red Hat severity
- Moderate. 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
- 2026-08-17 21:29Z2 MO AGO
- Last updated
- 2026-10-26 20:35Z2 DAYS AGO
- Reserved
- 2026-07-20
- Assigning CNA
- apple
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.5)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- Weaknesses
- CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass
- Data version
- 5.2
- Document digest
- fcb079cc5eda1bc873eda01a43414add5b072f1a2e18628a44dc0687bc9452f0
05 Affected products
06 References
- support.apple.comhttps://support.apple.com/en-us/148281
- support.apple.comhttps://support.apple.com/en-us/148282
- support.apple.comhttps://support.apple.com/en-us/148286
- support.apple.comhttps://support.apple.com/en-us/148287
- support.apple.comhttps://support.apple.com/en-us/149036
- support.apple.comhttps://support.apple.com/en-us/149037
- support.apple.comhttps://support.apple.com/en-us/149038
07 Fixed in
AlmaLinux 8
- webkit2gtk3 Fixed in 2.54.0-1.el8_10
- webkit2gtk3-devel Fixed in 2.54.0-1.el8_10
- webkit2gtk3-jsc Fixed in 2.54.0-1.el8_10
- webkit2gtk3-jsc-devel Fixed in 2.54.0-1.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 2.54.0-1.el9_8
- webkit2gtk3-devel Fixed in 2.54.0-1.el9_8
- webkit2gtk3-jsc Fixed in 2.54.0-1.el9_8
- webkit2gtk3-jsc-devel Fixed in 2.54.0-1.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 2.54.0-1.el8_10
- webkit2gtk3-devel Fixed in 2.54.0-1.el8_10
- webkit2gtk3-jsc Fixed in 2.54.0-1.el8_10
- webkit2gtk3-jsc-devel Fixed in 2.54.0-1.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 2.54.0-1.el9_8
- webkit2gtk3-devel Fixed in 2.54.0-1.el9_8
- webkit2gtk3-jsc Fixed in 2.54.0-1.el9_8
- webkit2gtk3-jsc-devel Fixed in 2.54.0-1.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 2.54.0-1~deb13u1
- wpewebkit No fix yet
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- webkit2gtk No fix yet
- wpewebkit Fixed in 2.54.0-1
Source: Debian Security Tracker, the Debian security team. 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.