CVE-2021-30860

As of 2025-10-21, CVE-2021-30860 is a CVSS 7.8 (HIGH-severity) vulnerability. CISA KEV-listed (known exploited); Public exploit code available. EPSS exploitation probability 76.0%. Threadlinqs Intelligence tracks 2 threats exploiting it.

Last updated: 2025-10-21

An integer overflow was addressed with improved input validation. This issue is fixed in Security Update 2021-005 Catalina, iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6, watchOS 7.6.2. Processing a maliciously crafted PDF may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.

CVSS v3 vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-190

Exploitation status

CISA KEV-listed (known exploited) · public exploit code available

• jeffssh/CVE-2021-30860 (github)
• Levilutz/CVE-2021-30860 (github)
• trickest/cve (trickest)

Threats tracking this CVE

• Pegasus Mercenary Spyware Used for State Surveillance of Azerbaijani Journalists, Activists, and Human Rights Defenders (NSO Group) — HIGH
• NSO Group Pegasus Spyware — WhatsApp Spearphishing Campaign Alleged in Meta Contempt Complaint (June 2026) — HIGH

References

• https://support.apple.com/en-us/HT212804
• https://support.apple.com/en-us/HT212805
• https://support.apple.com/en-us/HT212807
• https://support.apple.com/en-us/HT212806
• http://seclists.org/fulldisclosure/2021/Sep/28
• http://seclists.org/fulldisclosure/2021/Sep/27
• http://seclists.org/fulldisclosure/2021/Sep/25
• http://seclists.org/fulldisclosure/2021/Sep/26
• http://seclists.org/fulldisclosure/2021/Sep/40
• http://seclists.org/fulldisclosure/2021/Sep/38
• http://seclists.org/fulldisclosure/2021/Sep/39
• https://support.apple.com/kb/HT212824

← all vulnerabilities · Markdown version · Threadlinqs Intelligence

Enriched from CVE.org, NVD (this product uses the NVD API but is not endorsed or certified by the NVD), FIRST EPSS, CISA KEV, and GitHub Security Advisories.