CVE-2026-43718: A stack overflow was addressed with improved input validation. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafte

mediumCVSS 6.5CVE-2026-43718

A stack overflow was addressed with improved input validation. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to an unexpected Safari crash.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: medium — CVSS 6.5
Published: 2026-06-29
Last updated: 2026-06-30
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-43718

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-437180.28% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 20% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-43718	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

unknownApple Products Multiple Vulnerabilitieshkcert
unknownNCSC-2026-0215 [1.00] [M/H] Vulnerabilities fixed in Apple iOS and iPadOSncsc-nl
unknownNCSC-2026-0214 [1.00] [M/H] Vulnerabilities fixed in Apple MacOSncsc-nl
unknownMultiple vulnerabilities in Apple products (June 30, 2026)cert-fr-avis

Recent advisories for A stack overflow

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

mediumCVE-2026-31267: Mercusys MW302R MW302R(EU)_V1_1.4.10 Build 231023 is vulnerable to Buffer Overflow in the admi…nvd · 2026-07-09
highCVE-2026-51605: A stack-based buffer overflow vulnerability in the RTSP service of Tenda CP3 V3.0 (firmware V3…nvd · 2026-07-09
highCVE-2026-51604: A stack-based buffer overflow vulnerability in the RTSP service of Tenda CP3 V3.0 (firmware V3…nvd · 2026-07-09
highCVE-2026-51603: A stack-based buffer overflow vulnerability in the RTSP service of Tenda CP3 V3.0 (firmware V3…nvd · 2026-07-09
highCVE-2026-51602: A stack-based buffer overflow vulnerability in the RTSP service of Tenda CP3 V3.0 (firmware V3…nvd · 2026-07-09
highCVE-2026-51601: Tenda CP3 V3.0 firmware V31.1.9.91 contains a stack-based buffer overflow in the RTSP service.…nvd · 2026-07-09