How severe is CVE-2025-31277?

CVE-2025-31277 has a CVSS score of 8.8/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2025-31277?

Affected package information for CVE-2025-31277 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2025-31277?

No fixed version has been published for CVE-2025-31277 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2025-31277 actively exploited in the wild?

No public exploit code has been indexed for CVE-2025-31277 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2025-31277?

CVE-2025-31277 has an EPSS (Exploit Prediction Scoring System) score of 0.3%, placing it in the 49th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

Is CVE-2025-31277 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2025-31277 (Apple Multiple Products Buffer Overflow Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2026-03-20. CISA required all US federal civilian agencies to remediate this vulnerability by 2026-04-03. The required action was: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2025-31277?

CVE-2025-31277 is classified as Buffer Overflow (CWE-119). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2025-31277 published, and has it been updated?

CVE-2025-31277 was published on July 30, 2025 and was last updated on April 22, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2026-03-20 — agencies required to remediate by 2026-04-03

CVE-2025-31277

HIGH

Published

Jul 30, 2025

Updated

Apr 22, 2026

Affected

0 pkgs

Patched

None yet

Exploits

None indexed

EPSS Exploitation Probability

via FIRST.org ↗

0.3%probability of exploitation in next 30 days

Lower Risk49th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

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

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2025-31277 in your stack?

O3 detects CVE-2025-31277 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my stack How O3 SCA works

CVSS Score

8.8/10

CVSS v3 base score

Vector breakdown

AV:Attack Vector

Network

AC:Attack Complexity

Low

PR:Privileges Required

None

UI:User Interaction

Required

S:Scope

Unchanged

C:Confidentiality

High

I:Integrity

High

A:Availability

High

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE Classification

CWE-119Buffer Overflow

Weaponization

No known public exploit tooling found.

Timeline

Disclosed

Jul 30, 2025

KEV added

Mar 20, 2026

Last updated

Apr 22, 2026

Identifiers

CVE-2025-31277

References

Advisorysupport.apple.com Advisorysupport.apple.com Advisorysupport.apple.com Advisorysupport.apple.com Advisorysupport.apple.com Advisorysupport.apple.com Webseclists.org Webseclists.org Webseclists.org Webseclists.org

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