Apple Multiple Products Integer Overflow or Wraparound Vulnerability
An integer overflow was addressed with improved input validation. This issue is fixed in tvOS 15.2, macOS Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing maliciously crafted web content may lead to arbitrary…
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 3 / 5
- KEV catalog (CISA)05 Mar 2026
- Exploited in EUVD (ENISA)05 Mar 2026
- Used by ransomwareno
- EPSS above 10 %7.0%
- No account, over the networkyes
What to do
Fix
Apply the vendor’s fix as soon as it is available.
CISA guidance: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Meanwhile
Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.
Manufacturers (CRA)
Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained
Description ENISA EUVD
An integer overflow was addressed with improved input validation. This issue is fixed in tvOS 15.2, macOS Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing maliciously crafted web content may lead to arbitrary code execution.
Affected products
- unspecified <15.2
- unspecified <12.1
- unspecified <8.3
Open source packages OSV
Affected libraries according to OSV, with fixed versions.
Timeline
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Published
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Exploitation reported (ENISA)
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Added to the KEV catalog
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CISA remediation due date
References
Other exploited vulnerabilities from the same vendor
- CVE-2026-86950Apple Multiple Products Out-of-Bounds Write Vulnerability6.7 · Actively exploited
- CVE-2026-65400Apple macOS Improper Authentication Vulnerability5.8 · Actively exploited
- CVE-2025-43520Apple Multiple Products Classic Buffer Overflow Vulnerability3.4 · Background exploitation
- CVE-2025-43510Apple Multiple Products Improper Locking Vulnerability4.3 · Background exploitation
- CVE-2025-31277Apple Multiple Products Buffer Overflow Vulnerability5.4 · Background exploitation
- CVE-2023-43000Apple Multiple products Use-After-Free Vulnerability5.4 · Background exploitation