Skip to content

CVE-2021-31010

Deserialization of Untrusted Data: Is CVE-2021-31010 real, exploitable, or a false positive? Here's the community verdict.

signals

public sources

Exploited in wild
Yes
CISA KEV
Public exploit
None known
Metasploit/EDB/PoC
Base severity
7.5 High
CVSS
Exploitation prob.
4%
FIRST EPSS
Weakness
CWE-502 · Deserialization of Untrusted Data
CWE

Confirmed exploited in the wild. Patch this first, regardless of the base score.

baseline read

auto · not a community verdict

Real — exploited in the wild

CISA confirms active exploitation. Treat scanner hits as true positives unless your specific version or config is unaffected.

Based on CISA KEV

Confirm or dispute →

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

A deserialization issue was addressed through improved validation. This issue is fixed in Security Update 2021-005 Catalina, iOS 12.5.5, iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6, watchOS 7.6.2. A sandboxed process may be able to circumvent sandbox restrictions. Apple was aware of a report that this issue may have been actively exploited at the time of release..

Published

Embed this verdict
TruePositive verdict for CVE-2021-31010
Markdown
[![TruePositive verdict](https://www.truepositive.app/cve/CVE-2021-31010/badge.svg)](https://www.truepositive.app/cve/CVE-2021-31010)
HTML
<a href="https://www.truepositive.app/cve/CVE-2021-31010"><img src="https://www.truepositive.app/cve/CVE-2021-31010/badge.svg" alt="TruePositive verdict for CVE-2021-31010"></a>

Live badge that updates automatically as the community verdict changes.

Community ground truth

Be the first practitioner to weigh in

So far this is only TruePositive's editorial baseline from public sources. Add your real-world verdict below — it becomes the signal the next person triaging this relies on.

🥇 The first 50 practitioners to contribute earn a Founding Contributor badge.

In your experience, is this finding real and exploitable?

awaiting field verdicts
Real, but not a risk here
Not a real issue

Curated baseline: TruePositive's read from public sources is Real & exploitable — a starting point, not a community verdict.

No account needed. Anonymous verdicts post as an unverified signal. Log in to make yours verified and earn reputation.

Field notes & remediation

Verdicts are the quick signal. Notes are the evidence and fixes behind them.

  • 0
    Field note · TruePositive EditorialCurated

    Apple iOS, macOS, watchOS Sandbox Bypass Vulnerability — In affected versions of Apple iOS, macOS, and watchOS, a sandboxed process may be able to circumvent sandbox restrictions. Listed in the CISA KEV catalog (added 2022-08-25) — confirmed exploited in the wild, not theoretical. FIRST EPSS puts the chance of exploitation in the next 30 days at ~4%. Treat it as real and prioritize remediation over triage.

  • 0
    Remediation · TruePositive EditorialCurated

    Required action for Apple iOS, macOS, watchOS: Apply updates per vendor instructions. CISA set a federal remediation due date of 2022-09-15. After patching, verify the vulnerable path is no longer reachable before closing the finding.

Add a field note or remediationoptional
Note type

What are you adding?

Markdown supported · minimum 20 characters.

Same weakness: CWE-502 · Deserialization of Untrusted Data.