Skip to main content
ExploitedIn CISA KEVFix available

CVE-2021-31010

Exploitation confirmed. First attested on 2022-08-25 by CISA-ADP, CISA KEV, GCVE · kevintel.

  • Published2021-08-24
  • Fixed in14.8 · 12.5.5
  • WeaknessCWE-502

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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..

Timeline

dates in UTC
  1. 2021-08-2419:15CVE publishedNVD
  2. 2022-08-25Added to the CISA KEV catalogCISA KEV
  3. 2022-08-25Listed as exploited by GCVEGCVE
  4. 2022-08-25Exploitation first reportedCISA KEV
  5. 2025-01-2917:28SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-03 15:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-31010?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-31010?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Apple iphone os
BranchAffectedFixed in
14.x≥ 14.0, < 14.814.8
12.x≥ 12.0, < 12.5.512.5.5
Apple mac os x
BranchAffectedFixed in
10.15≥ 10.15, < 10.15.710.15.7
10.15= 10.15.7no fix published
Apple ipados
BranchAffectedFixed in
14.8< 14.814.8

2 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA5 products

As apple, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Apple macOS
    Affected
    • < 11.6fixed in 11.6custom
  • Apple macOS
    Affected
    • < 2021fixed in 2021custom
  • Apple watchOS
    Affected
    • < 7.6fixed in 7.6custom
  • Apple watchOS
    Affected
    • < 14.8fixed in 14.8custom
  • Apple watchOS
    Affected
    • < 12.5fixed in 12.5custom

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2022-05-26

Fix

  1. Update Apple iphone os to 14.8 · 12.5.5
  2. CISA’s required action: Apply updates per vendor instructions.due 2022-09-15

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2022-08-25
Patch Due Date
2022-09-15
Ransomware Use
Unknown
Required Action
Apply updates per vendor instructions.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Published
2021-08-24
Last Modified
2026-06-17
NVD status
Analyzed

Frequently asked questions

What is CVE-2021-31010?

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..

Is CVE-2021-31010 actively exploited?

Yes. CVE-2021-31010 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2022-09-15.

What is the CVSS score for CVE-2021-31010?

CVE-2021-31010 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Hear about the next vulnerability in your software

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this productCISA KEV additions, August 2022Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database

Sources for this record