CVE-2026-43773: An out-of-bounds read 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. Mounting a maliciously crafte
An out-of-bounds read 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. Mounting a maliciously crafted disk image may cause unexpected system termination or corrupt kernel memory.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-43773
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-2026-437730.42% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 34% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-43773 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for An out-of-bounds read
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-2026-67306: FreeRDP versions 3.28.0 and earlier contain an out-of-bounds read vulnerability in the RDP6 pl…nvd · 2026-08-01
- highCVE-2026-67301: FreeRDP before 3.29.0 contains out-of-bounds read vulnerabilities in the async update message …nvd · 2026-08-01
- highCVE-2026-67291: FreeRDP before 3.29.0 (affected versions <= 3.28.0) contains a heap out-of-bounds read in upda…nvd · 2026-08-01
- highCVE-2026-67290: FreeRDP before 3.29.0 contains a heap out-of-bounds read vulnerability in the TSMF FFmpeg deco…nvd · 2026-08-01
- lowCVE-2026-66401: FreeRDP before 3.29.0 contains an out-of-bounds heap read vulnerability in the UVC H.264 exten…nvd · 2026-08-01
- mediumGHSA-ff84-5f28-78qj: re2: Out-of-bounds heap read in `exec`/`test`/`match` via attacker-influenced `lastIndex`…ghsa · 2026-07-31
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