CVE-2021-30860

An integer overflow was addressed with improved input validation

7.8 HighIn KEVPublic exploitFix available

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.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

76.0%Up 75.7 points since Sep 15, 2021

What each source reports

NVD Score used 7.8

Record: CVE-2021-30860
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0: 6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness: CWE-190
Updated: 2026-11-02

CVE List 7.8

Record: CVE-2021-30860
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-190
Updated: 2026-11-02

EUVDEUVD-2021-17777 7.8

Record: EUVD-2021-17777
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

CISA KEV No score

Apple Multiple Products Integer Overflow Vulnerability

Apple iOS, iPadOS, macOS, and watchOS CoreGraphics contain an integer overflow vulnerability which may allow code execution when processing a maliciously crafted PDF. The vulnerability is also known under the moniker of FORCEDENTRY.

Record: CVE-2021-30860
Weakness: CWE-20, CWE-190
Updated: 2026-11-02

OSV 7.8

Record: CVE-2021-30860
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVJLSEC-2025-195 7.8

An integer overflow was addressed with improved input validation

Record: JLSEC-2025-195
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0: 6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`Poppler_jll` Julia	before 23.12.0+0	23.12.0+0

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
PoC in GitHub	Levilutz/CVE-2021-30860	2021-09-18
PoC in GitHub	jeffssh/CVE-2021-30860	2021-12-25

History

History
Recorded	Changed	Sources
Nov 3, 2026	exploitation
Nov 2, 2026	first indexed	CVE List, EUVD, CISA KEV, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-30860 is a high vulnerability (CVSS 7.8) in Apple Ios, published August 24, 2021. CISA lists it as known to be exploited, since November 3, 2021. EUVD reports exploitation since November 3, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 76.0%, the 99th percentile. Fixed in Poppler_jll 23.12.0+0.

References

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