CVE-2022-42856
Confirmed PUBLISHEDA type confusion issue was addressed with improved state handling. This issue is fixed in Safari 16.2, tvOS 16.2, macOS Ventura 13.1, iOS 15.7.2...
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
A type confusion issue was addressed with improved state handling. This issue is fixed in Safari 16.2, tvOS 16.2, macOS Ventura 13.1, iOS 15.7.2 and iPadOS 15.7.2, iOS 16.1.2. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited against versions of iOS released before iOS 15.1..
- CVE Published
- Dec 15, 2022
- Exploitation Reported
- Dec 14, 2022
- CVSS
- 8.8 High
- EPSS
- —
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| Apple |
tvOS
|
unspecified to < 16.2 |
Affected |
| Apple |
tvOS
|
unspecified to < 13.1 |
Affected |
| Apple |
tvOS
|
unspecified to < 15.7 |
Affected |
| Apple |
tvOS
|
unspecified to < 16.1 |
Affected |
| Apple |
tvOS
|
unspecified to < 16.2 |
Affected |
CVE References
- 20221220 APPLE-SA-2022-12-13-2 iOS 15.7.2 and iPadOS 15.7.2 seclists.org · Mailing List http://seclists.org/fulldisclosure/2022/Dec/21
- 20221220 APPLE-SA-2022-12-13-4 macOS Ventura 13.1 seclists.org · Mailing List http://seclists.org/fulldisclosure/2022/Dec/23
- 20221220 APPLE-SA-2022-12-13-3 iOS 16.1.2 seclists.org · Mailing List http://seclists.org/fulldisclosure/2022/Dec/22
- 20221220 APPLE-SA-2022-12-13-7 tvOS 16.2 seclists.org · Mailing List http://seclists.org/fulldisclosure/2022/Dec/26
- 20221220 APPLE-SA-2022-12-13-9 Safari 16.2 seclists.org · Mailing List http://seclists.org/fulldisclosure/2022/Dec/28
Show 7 more references
- [oss-security] 20221226 WebKitGTK and WPE WebKit Security Advisory WSA-2022-0011 openwall.com · Mailing List http://www.openwall.com/lists/oss-security/2022/12/26/1
- support.apple.com/en-us/HT213535 support.apple.com · CVE Record https://support.apple.com/en-us/HT213535
- support.apple.com/en-us/HT213532 support.apple.com · CVE Record https://support.apple.com/en-us/HT213532
- support.apple.com/en-us/HT213531 support.apple.com · CVE Record https://support.apple.com/en-us/HT213531
- support.apple.com/en-us/HT213516 support.apple.com · CVE Record https://support.apple.com/en-us/HT213516
- support.apple.com/en-us/HT213537 support.apple.com · CVE Record https://support.apple.com/en-us/HT213537
- security.gentoo.org/glsa/202305-32 security.gentoo.org · CVE Record https://security.gentoo.org/glsa/202305-32
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 | 2022-12-14 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:R/S:U/C:H/I:H/A:H
Exploitation Status
Exploited in the wild
Recorded 2022-12-14 00:00:00 UTC · CISA
Weaknesses (CWE)
-
Access of Resource Using Incompatible Type ('Type Confusion')
Scanner Integrations
| Scanner | Reference | Detected |
|---|---|---|
| Nessus | https://www.tenable.com/plugins/nessus/236447 | 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 over 3 years ago00:00 UTC · over 3 years ago
CVE published
Vulnerability disclosed publicly
-
00:00 UTC over 3 years ago00:00 UTC · over 3 years ago
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
00:00 UTC almost 4 years ago00:00 UTC · almost 4 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-2022-42856
{
"cve_id": "CVE-2022-42856",
"title": "A type confusion issue was addressed with improved state handling. This issue...",
"affected_vendor": "Apple",
"affected_product": "tvOS",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 8.8,
"epss_score": null,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}