CVE-2021-31010
Confirmed PUBLISHEDA deserialization issue was addressed through improved validation. This issue is fixed in Security Update 2021-005 Catalina, iOS 12.5.5, iOS 14.8...
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
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..
- CVE Published
- Aug 24, 2021
- Exploitation Reported
- Aug 25, 2022
- CVSS
- 7.5 High
- EPSS
- —
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| Apple |
macOS
|
unspecified to < 11.6 |
Affected |
| Apple |
macOS
|
unspecified to < 2021 |
Affected |
| Apple |
watchOS
|
unspecified to < 7.6 |
Affected |
| Apple |
watchOS
|
unspecified to < 14.8 |
Affected |
| Apple |
watchOS
|
unspecified to < 12.5 |
Affected |
CVE References
- support.apple.com/en-us/HT212804 support.apple.com · CVE Record https://support.apple.com/en-us/HT212804
- support.apple.com/en-us/HT212805 support.apple.com · CVE Record https://support.apple.com/en-us/HT212805
- support.apple.com/en-us/HT212807 support.apple.com · CVE Record https://support.apple.com/en-us/HT212807
- support.apple.com/en-us/HT212806 support.apple.com · CVE Record https://support.apple.com/en-us/HT212806
- support.apple.com/en-us/HT212824 support.apple.com · CVE Record https://support.apple.com/en-us/HT212824
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CISA First | 2022-08-25 00:00 UTC |
No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
AV:N/AC:L/Au:N/C:N/I:P/A:N
Exploitation Status
Exploited in the wild
Recorded 2022-08-25 00:00:00 UTC · CISA
Weaknesses (CWE)
-
Deserialization of Untrusted Data
Scanner Integrations
| Scanner | Reference | Detected |
|---|---|---|
| Nessus | https://www.tenable.com/plugins/nessus/153652 | Jun 02, 2025 |
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
09:27 UTC about 1 year ago09:27 UTC · about 1 year ago
Nessus plugin available
Scanner coverage available
-
00:00 UTC almost 4 years ago00:00 UTC · almost 4 years ago
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
18:51 UTC almost 5 years ago18:51 UTC · almost 5 years ago
CVE published
Vulnerability disclosed publicly
-
00:00 UTC over 5 years ago00:00 UTC · over 5 years ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2021-31010
{
"cve_id": "CVE-2021-31010",
"title": "A deserialization issue was addressed through improved validation. This issue...",
"affected_vendor": "Apple",
"affected_product": "macOS, watchOS",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 7.5,
"epss_score": null,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}