CVE-2026-28901: Apple Safari · Memory Buffer Overflow
Affects Apple SafariSource CVE Database V5
Not known to be exploited · CVSS 4.3 Medium : upgrade to 26.5 when convenient.
Data as of 30 Oct 2026, 06:59 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 32% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 26.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:LExploitation evidence
Disclosed: evidence found.
CVE published 11 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Upgrade Safari and iOS and iPadOS and macOS and tvOS and visionOS and watchOS to 26.5.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| AppleSafari | Affected
| Fixed in
|
| AppleiOS and iPadOS | Affected
| Fixed in
|
| ApplemacOS | Affected
| Fixed in
|
| AppletvOS | Affected
| Fixed in
|
| ApplevisionOS | Affected
| Fixed in
|
| ApplewatchOS | Affected
| Fixed in
|
AI-suggested
A fix is available and has been released by Apple in Safari 26.5 and related OS versions, and by Red Hat in WebKitGTK+ version 2.52.4 for RHEL 7 Extended Life Cycle Support. Users and administrators should apply these official updates to remediate the vulnerability. Patch status is confirmed by vendor advisories. No additional mitigation actions are specified beyond applying the updates.
Description
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5, 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.
References
- support.apple.com/en-us/127110 (opens in a new tab)
- support.apple.com/en-us/127115 (opens in a new tab)
- support.apple.com/en-us/127118 (opens in a new tab)
- support.apple.com/en-us/127119 (opens in a new tab)
- support.apple.com/en-us/127120 (opens in a new tab)
- support.apple.com/en-us/127121 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-28901 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2483957 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-28901.json (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:27728 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:25918 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:27785 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:28114 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:27804 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:28148 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:28146 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:28147 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:25927 (opens in a new tab)