Is CVE-2021-30761 actively exploited?

Yes. CVE-2021-30761 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2021-30761 be exploited remotely?

The attack vector of CVE-2021-30761 has not been classified yet.

What is the CVSS score of CVE-2021-30761?

CVE-2021-30761 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2021-30761

HIGHCISA KEVIN THE WILD

CVE-2021-30761

Published: November 3, 2021

EPSS:0.37%probability of exploitation in 30 daysPercentile:58.4th

Official Description

Apple iOS WebKit contains a memory corruption vulnerability that leads to code execution when processing maliciously crafted web content. 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.

NVD Source

CISA KEV Advisory

Apple iOS WebKit Memory Corruption Vulnerability

Added to KEV: 2021-11-03Federal patch deadline: 2021-11-17

Required Action (CISA)

Apply updates per vendor instructions.

Risk Analysis

This memory corruption vulnerability in Apple iOS WebKit allows for code execution when processing specially crafted web content. This is a high-severity flaw that could impact various HTML parsers. Its presence in CISA's KEV catalog indicates confirmed exploitation, making it an urgent concern despite a low EPSS score of 0.00370.

This vulnerability has been actively exploited in the wild, as confirmed by its presence in CISA's KEV catalog. It is remotely exploitable via crafted web content.

Recommended Action

Users should update their Apple iOS devices and any applications relying on WebKit for HTML processing to the latest versions to mitigate this risk.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2021-30761 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2021-30761 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.