EXPOSURES › CVE-2021-1871
CVE-2021-1871
HIGH ⌖ ON CISA KEV · EXPLOITEDApple's WebKit in iOS, iPadOS, and macOS had a remote code execution vulnerability that was actively exploited in the wild.
A logic flaw in WebKit allowed remote attackers to execute arbitrary code on Apple devices, impacting Safari and other WebKit-based browsers. This failure is critical for DIB organizations because it demonstrates the risk of relying on widely used, third-party components that can be exploited before patches are applied, leading to potential data breaches or ransomware entry. Organizations must ensure their software supply chain includes rigorous patch management and consider the exposure of components shared across multiple vendors.
Shame score — The vulnerability was actively exploited in the wild (KEV) and linked to ransomware campaigns, indicating a severe failure in patch management and supply chain security.
▸ RECOMMENDED ACTION Actively exploited (CISA KEV) — remediate now, ahead of your normal patch cycle.
Apple iOS, iPadOS, and macOS WebKit contain an unspecified logic vulnerability that allows a remote attacker to execute code. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.
"Apple says former employee exploited ‘rare’ bug to download confidential files after leaving for OpenAI"
"Apple iOS, iPadOS, and macOS WebKit contain an unspecified logic vulnerability that allows a remote attacker to execute code."
"Browse 765 breaches across 20 industries."
"CVE, short for Common Vulnerabilities and Exposures, is a list of publicly disclosed computer security flaws."
"CVEs and Security Vulnerabilities - OpenCVE"
"CISA's Known Exploited Vulnerabilities (KEV) catalog is the authoritative list of security flaws that have been"