# CVE-2025-31277

The issue was addressed with improved memory handling. This issue is fixed in Safari 18.6, iOS 18.6 and iPadOS 18.6, macOS Sequoia 15.6, tvOS 18.6, visionOS 2.6, watchOS 11.6. Processing maliciously crafted web content may lead to memory corruption.

- Page: https://www.vulneraibility.com/cve/CVE-2025-31277
- CVSS: 8.8
- Known exploited: yes, in CISA KEV since 2026-03-20; CISA due date 2026-04-03
- EPSS: 1.68%
- Unvetted proof-of-concept code on GitHub: 2 GitHub proofs of concept (first 2026-03-27)
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2026-03-21)
- Weakness: CWE-119, CWE-120
- Published: 2025-07-30

## Affected versions

- Apple iOS and iPadOS: affected < 18.6
- Apple macOS: affected < 15.6
- Apple Safari: affected < 18.6
- Apple tvOS: affected < 18.6
- Apple visionOS: affected < 2.6
- Apple watchOS: affected < 11.6

A version outside these ranges is not a statement that it is unaffected.

## References

- [other] https://support.apple.com/en-us/124147
- [other] https://support.apple.com/en-us/124149
- [other] https://support.apple.com/en-us/124152
- [other] https://support.apple.com/en-us/124153
- [other] https://support.apple.com/en-us/124154
- [other] https://support.apple.com/en-us/124155
- [advisory] https://cloud.google.com/blog/topics/threat-intelligence/darksword-ios-exploit-chain/
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-31277
- [other] http://seclists.org/fulldisclosure/2025/Aug/0
- [other] http://seclists.org/fulldisclosure/2025/Jul/36
- [other] http://seclists.org/fulldisclosure/2025/Jul/32
- [other] http://seclists.org/fulldisclosure/2025/Jul/30
- [other] https://access.redhat.com/security/cve/CVE-2025-31277
- [other] https://bugzilla.redhat.com/show_bug.cgi?id=2448780
- [other] https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-31277.json
- [advisory] https://access.redhat.com/errata/RHSA-2025:19352
- [advisory] https://access.redhat.com/errata/RHSA-2025:17802
- [advisory] https://access.redhat.com/errata/RHSA-2025:19157
- [advisory] https://access.redhat.com/errata/RHSA-2025:19165
- [advisory] https://access.redhat.com/errata/RHSA-2025:19109
- [advisory] https://access.redhat.com/errata/RHSA-2025:17807
- [advisory] https://access.redhat.com/errata/RHSA-2025:17643
- [advisory] https://access.redhat.com/errata/RHSA-2025:17743
- [advisory] https://access.redhat.com/errata/RHSA-2025:17741
- [advisory] https://access.redhat.com/errata/RHSA-2025:18097

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.