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CVE-2026-20700: Apple Multiple Buffer Overflow Vulnerability

criticalknown exploitedpublic exploitCVE-2026-20700
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Apple iOS, macOS, tvOS, watchOS, and visionOS contain an improper restriction of operations within the bounds of a memory buffer vulnerability that could allow an attacker with memory write the capability to execute arbitrary code.

CSIRTS triage

vendor: Appleproduct: iOS, macOS, tvOS, watchOS, visionOSMemory corruption
What
Apple operating systems contain a buffer overflow vulnerability.
Who is affected
Users of Apple devices running iOS, macOS, tvOS, watchOS, and visionOS.
Urgency
Immediate remediation is critical due to active exploitation.
Action
Update to the latest versions of Apple operating systems.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2026-02-12
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-20700

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-20700coverage & exploitation statusNVD · CVE.org

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