VulnerabilityPublished 26 Oct 2026

CVE-2026-86973: An out-of-bounds read was addressed with improved bounds checking

Source GCVE Database

Authoritative record:CVE-2026-86973· Medium

Not known to be exploited : upgrade to 27.2 when convenient.

Data as of 26 Oct 2026, 22:29 UTC

Severity

Medium

Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD

Patch: Available – fixed in 27.2, 26.7.2

Exploitation evidence

Disclosed: evidence found.
CVE published 26 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

ghsa-mj88-7cph-rp5h

What to do

Upgrade Safari and macOS to 27.2; iOS and iPadOS to 27.2 or 26.7.2.

Affected software

Product	Affected	Fixed in
AppleSafari	Affected <27.2	Fixed in 27.2
AppleiOS and iPadOS	Affected <27.2	Fixed in 27.2
AppleiOS and iPadOS	Affected <26.7.2	Fixed in 26.7.2
ApplemacOS	Affected <27.2	Fixed in 27.2

AI-suggested

The vulnerability is fixed in Safari 27.2, iOS 26.7.2 and 27.2, iPadOS 26.7.2 and 27.2, and macOS Golden Gate 27.2. Users and administrators should update to these versions to remediate the issue.

Description

CVE-2026-86973 is an out-of-bounds read vulnerability in Safari and related Apple operating systems that was fixed by improved bounds checking. The flaw could cause an unexpected process crash when processing maliciously crafted web content. The issue is resolved in Safari 27.2, iOS 26.7.2 and 27.2, iPadOS 26.7.2 and 27.2, and macOS Golden Gate 27.2.

Impact

The impact is limited to an unexpected process crash, which could cause denial of service for the affected browser process. There is no indication of code execution or data leakage from the provided information.

Summary

This vulnerability involves an out-of-bounds read due to insufficient bounds checking in Safari and Apple OS browsers. Processing specially crafted web content may trigger this flaw, leading to an unexpected process crash. Apple addressed the issue by improving bounds checking in the specified fixed versions.

References

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