CVE-2020-9819
Actively exploited. CVE-2020-9819 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
Apple iOS, iPadOS, and watchOS Mail contains a memory corruption vulnerability that may allow heap corruption when processing a maliciously crafted mail message.
CSIRTS triage
- What
- There is a memory corruption vulnerability in the Mail application that may allow heap corruption when processing malicious emails.
- Who is affected
- Users of Apple iOS, iPadOS, and watchOS Mail are affected.
- Urgency
- Remediation is urgent due to active exploitation and critical severity.
- Action
- Update to the latest version of iOS, iPadOS, or watchOS.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 80% of all EPSS-scored CVEs.
Advisory coverage (1)
- criticalexploitedCVE-2020-9819: Apple iOS, iPadOS, and watchOS Memory Corruption Vulnerabilitycisa-kev · 2021-11-03
External references
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