CVE WatchAug 31, 2026

CVE-2026-75143

FFmpeg before commit 1c10bcc contains a heap buffer overflow in the RIST protocol reader (libavformat/librist.c). librist_read() ignored its

CVSS

9.8

Critical

EPSS

0.4%

p35

KEV

—

Exploit Today

0-100

Published: Aug 19, 2026 · Last modified: Aug 31, 2026 · CWE-122

EPSS · 30d

0.4%EPSS · 30 days0.4%

2026-08-262026-09-23

Technical description

FFmpeg before commit 1c10bcc contains a heap buffer overflow in the RIST protocol reader (libavformat/librist.c). librist_read() ignored its size argument and copied the full received payload length into the caller-provided destination buffer, overflowing it when the payload exceeds the destination size. This is reachable via the async:rist:// URL scheme, where the async wrapper supplies a smaller buffer than the received payload. A remote RIST sender can trigger the overflow by sending a packet whose payload exceeds the caller buffer size.

Official references

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

CVE-2026-756657.8 HIG

27.3%

——8Bridge is affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.11h CVE-2026-756497.8 HIG

27.3%

36.5%

——11Heap-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Buffers. This issue affects Connext Professional: from 7.4.0 before 7.7.0.1, from 7.0.0 before 7.3.1.6, from 6.1.0 before 6.1.*, from 6.0.0 before 6.0.*, from 5.3.0 before 5.3.*, from 5.2.3 before 5.2.*.1d CVE-2026-941279.8 CRI

71.2%

KEV—71F5 BIG-IP APM Heap-based Buffer Overflow Vulnerability10h CVE-2016-150599.8 CRI

34.2%

——10Net::IDN::Punycode versions before 2.301 for Perl allow a heap buffer overflow via unchecked writes past the output buffer in encode_punycode. The XS backend builds the encoded label in the string buffer of the scalar it returns, sized from the input length. The loop that emits the digits of each code point checks for room before every write, but the write of the last digit of each round and the write of the terminating NUL do not, so an input whose encoded form fills the buffer writes past its end. Only the XS backend is affected. Encoding an attacker-supplied string corrupts the heap.1d CVE-2026-944248.8 HIG

3.5%

——1A vulnerability has been found in Moore Threads MTT S80 Driver Package up to 340.150. Impacted is the function sub_140001000 in the library mtdispkm64.sys of the component IOCTL Handler. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. The vendor was contacted early about this disclosure but did not respond in any way.1d