VulnTideExploited vulnerabilities, by vendor. Data as of 28 Oct 2026.
Known exploitedIn CISA's KEV catalog since 20 March 2026Ransomware use: unknown
Apple Multiple Products

CVE-2025-31277: Apple Multiple Products Buffer Overflow Vulnerability

Is it exploited?

Yes. CISA added it to the Known Exploited Vulnerabilities catalog on 20 Mar 2026, 234 days after the CVE record was published.

How likely is exploitation in the next 30 days?
1.7%

EPSS score, percentile 76.5 of all scored records

How severe?
8.8 High

CVSS v3.1 base score, from CISA's enrichment of the record

What should I do?

Required action (CISA), due 3 Apr 2026: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

The CVE record links no vendor advisory, patch or mitigation.

Which versions are affected?

Affected: before 18.6; before 18.6; before 15.6; before 18.6; before 2.6; before 11.6

Versions by product

Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

What to do

Required action, set by CISA

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CISA due date for this action: 3 April 2026.

Advisories and patches

The CVE record links no vendor advisory, patch or mitigation.

Linked from CISA's catalog entry

Affected products and versions

As listed in the CVE record.

Apple Safari
StatusVersions
Affectedbefore 18.6
Apple iOS and iPadOS
StatusVersions
Affectedbefore 18.6
Apple macOS
StatusVersions
Affectedbefore 15.6
Apple tvOS
StatusVersions
Affectedbefore 18.6
Apple visionOS
StatusVersions
Affectedbefore 2.6
Apple watchOS
StatusVersions
Affectedbefore 11.6

Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

About this vulnerability

Apple Safari, iOS, watchOS, visionOS, iPadOS, macOS, and tvOS contain a buffer overflow vulnerability that could allow the processing of maliciously crafted web content which may lead to memory corruption.

Summary: CISA's KEV catalog, as of 28 Oct 2026.

  • CISA added CVE-2025-31277 to its Known Exploited Vulnerabilities (KEV) catalog on 20 Mar 2026.
  • CISA's ransomware flag for this entry is "Unknown": no evidence of ransomware use in the catalog, which is not proof of none.
  • The due date CISA sets for the required action is 3 Apr 2026.
  • The CVE record was published on 29 Jul 2025, 234 days before it was added to KEV.
  • The CVE record carries a CVSS v3.1 base score of 8.8 (High), taken from CISA's enrichment of the record.
  • FIRST's EPSS model puts the probability of exploitation in the next 30 days at 1.7% (percentile 76.5), as of 28 Oct 2026.
  • CISA's SSVC assessment in the CVE record: exploitation active, automatable no, technical impact total.

Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026. About the data.

Description

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.

Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

Weakness

  • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record and the KEV entry.

Timeline

DateEvent
29 Jul 2025CVE record published
20 Mar 2026Added to CISA KEV
3 Apr 2026CISA due date for the required action
21 Sep 2026CVE record last updated

References

More exploited Apple vulnerabilities

  • CVE-2026-86950: Apple Multiple Products Out-of-Bounds Write Vulnerability (added 29 Sep 2026)
  • CVE-2026-65400: Apple macOS Improper Authentication Vulnerability (added 18 Aug 2026)
  • CVE-2025-43510: Apple Multiple Products Improper Locking Vulnerability (added 20 Mar 2026)
  • CVE-2025-43520: Apple Multiple Products Classic Buffer Overflow Vulnerability (added 20 Mar 2026)
  • CVE-2021-30952: Apple Multiple Products Integer Overflow or Wraparound Vulnerability (added 5 Mar 2026)
  • CVE-2023-41974: Apple iOS and iPadOS Use-After-Free Vulnerability (added 5 Mar 2026)