CVE-2023-43000
Confirmed PUBLISHEDA use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Ventura 13.5, iOS 16.6 and iPadOS 16.6, Safari...
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
A use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Ventura 13.5, iOS 16.6 and iPadOS 16.6, Safari 16.6, iOS 15.8.7 and iPadOS 15.8.7. Processing maliciously crafted web content may lead to memory corruption.
- CVE Published
- Nov 05, 2025
- Exploitation Reported
- Jun 01, 2026
- CVSS
- 8.8 High
- EPSS
- 3.9%
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| Apple |
macOS
|
unspecified to < 13.5 |
Affected |
| Apple |
iOS and iPadOS
|
unspecified to < 16.6 |
Affected |
| Apple |
Safari
|
unspecified to < 16.6 |
Affected |
| Apple |
iOS and iPadOS
|
unspecified to < 15.8.7 |
Affected |
CVE References
- support.apple.com/en-us/120331 support.apple.com · CVE Record https://support.apple.com/en-us/120331
- support.apple.com/en-us/120338 support.apple.com · CVE Record https://support.apple.com/en-us/120338
- support.apple.com/en-us/120324 support.apple.com · CVE Record https://support.apple.com/en-us/120324
- support.apple.com/en-us/126632 support.apple.com · CVE Record https://support.apple.com/en-us/126632
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- 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 | 2026-06-01 13:30 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 2026-06-01 13:30:35 UTC · CISA
Weaknesses (CWE)
-
Use After Free
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
13:30 UTC about 2 months ago13:30 UTC · about 2 months ago
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
18:33 UTC 9 months ago18:33 UTC · 9 months ago
CVE published
Vulnerability disclosed publicly
-
19:05 UTC almost 3 years ago19:05 UTC · almost 3 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-2023-43000
{
"cve_id": "CVE-2023-43000",
"title": "A use-after-free issue was addressed with improved memory management. This is...",
"affected_vendor": "Apple",
"affected_product": "macOS, iOS and iPadOS, Safari",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 8.8,
"epss_score": 0.03901,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}