A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to execute arbitrary code out of its sandbox or with certain elevated privileges.
CVE-2026-43750
CRITICALPre-NVD 9.89.8—Trending — 5 sources updated this week
EchelonGraph scoreHIGH confidence
Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-27. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.8; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.8
- EG Score
- 9.8(high)
- EG Risk
- 59(Track)EG Risk 59/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity98% × 45%Exploitation0% × 40%Automatability100% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 8%
- KEV
- Not listed
Published
July 27, 2026
Last Modified
July 28, 2026
Advisory Details (3)
Auto-updated Jul 28, 2026No patch confirmed yet.
generic
About the security content of macOS Sonoma 14.8.8 - Apple Support
https://support.apple.com/en-us/128072generic
About the security content of macOS Sequoia 15.7.8 - Apple Support
https://support.apple.com/en-us/128071generic
About the security content of macOS Tahoe 26.6 - Apple Support
https://support.apple.com/en-us/128067Vendor Advisories for CVE-2026-43750(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 10× in last 7d / 10× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-28 16:41 UTCGHSA enrichment
- 2026-07-28 15:45 UTCEG score recompute
- 2026-07-28 15:44 UTCGHSA enrichment
- 2026-07-28 15:36 UTCEPSS rescore
- 2026-07-28 14:40 UTCEG score recompute▲ 9.80
- 2026-07-28 14:40 UTCGHSA enrichment
- 2026-07-28 14:38 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
- 2026-07-27 21:19 UTCNVD update
- 2026-07-27 20:27 UTCEG score recompute
- 2026-07-27 20:24 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Same CWE
10 shownCWE-120
- CVE-2010-10016EG 10.0CRITICAL
- CVE-2012-10035EG 10.0CRITICAL
- CVE-2011-4862EG 10.0EPSS p100HIGH
- CVE-2008-3496EG 10.0HIGH
- CVE-2007-1770EG 10.0EPSS p97HIGH
- CVE-2002-1337EG 10.0EPSS p99HIGH
- CVE-2001-0554EG 10.0EPSS p98HIGH
- CVE-2001-0191EG 10.0EPSS p92HIGH
- CVE-1999-1237EG 10.0EPSS p94HIGH
- CVE-1999-0385EG 10.0EPSS p97HIGH
Frequently asked(5)
What is CVE-2026-43750?
CVE-2026-43750 is a critical vulnerability published on July 27, 2026. A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to execute arbitrary code out of its sandbox or with certain elevated privileges.
When was CVE-2026-43750 disclosed?
CVE-2026-43750 was first published in the National Vulnerability Database on July 27, 2026, with the most recent update on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43750 actively exploited?
CVE-2026-43750 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 92.3% of all scored CVEs.
What is the CVSS score of CVE-2026-43750?
CVE-2026-43750 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-43750?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43750, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-43750
Is Your Infrastructure Affected by CVE-2026-43750?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.