Threats / Apple / CVE-2021-31010
CVE-2021-31010
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Apple iOS, macOS, watchOS vulnerability
A sandbox escape vulnerability in Apple iOS, macOS, and watchOS allows sandboxed processes to circumvent sandbox restrictions through improper input validation and deserialization.
Verdict
Today item — known-exploited.
A sandboxed process can escape sandbox restrictions, potentially enabling privilege escalation or lateral movement. The vulnerability has been exploited in the wild, though not as part of ransomware campaigns.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
8 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 2022-08-25).
Probability (EPSS)
EPSS 0.03673 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Apple, iOS, macOS, watchOS. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-20 Improper Input Validation, CWE-502 Deserialization of Untrusted Data — weakness family: Injection.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 malicious input to a sandboxed process to trigger improper validation or unsafe deserialization.
Business
An attacker gains the ability to break out of sandbox isolation, expanding their access beyond the intended restricted environment.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I escalate privileges by leveraging the sandbox escape to interact with higher-privileged system components.
Business
System integrity is compromised as attackers can access sensitive user data, system resources, or execute arbitrary code with elevated permissions.
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