Threats / Apple / CVE-2021-30860
CVE-2021-30860
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Apple Multiple Products vulnerability
Integer overflow in CoreGraphics across Apple platforms allows remote code execution via maliciously crafted PDF files. Actively exploited in the wild.
Verdict
Today item — known-exploited.
An integer overflow in CoreGraphics processing enables attackers to achieve code execution on iOS, iPadOS, macOS, and watchOS devices through specially crafted PDF documents. The vulnerability has been observed in active exploitation campaigns.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
9 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03).
Probability (EPSS)
EPSS 0.75994 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Apple, Multiple Products. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-20 Improper Input Validation, CWE-190 Integer Overflow — weakness family: Memory safety.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a malicious PDF that triggers an integer overflow in the CoreGraphics rendering engine.
Business
Users receive seemingly legitimate PDF documents that exploit the vulnerability without user interaction beyond opening.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I deliver the malicious PDF via email, messaging, or web content to target devices.
Business
Attack surface spans all communication channels where PDFs are commonly shared across the Apple ecosystem.
3
Lateral reach — past segmentation narrative 3
Attacker
I execute arbitrary code with the privileges of the affected application processing the PDF.
Business
Compromised devices enable data exfiltration, surveillance, or lateral movement within organizational networks.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05