Wordfence Argus Discovers Critical Vulnerability in libheif, the Library That Opens iPhone Photos on Your Server

On September 1, 2026, the libheif project released version 1.23.3, closing a critical heap buffer overflow that the Wordfence Threat Intelligence team, using Wordfence Argus, discovered and reported four days earlier. The libheif maintainer, Dirk Farin, gave it a score of 9.8 out of 10 on the CVS...

CVE-2026-68513

A flaw was found in PyOpenEXR, a component of OpenEXR. A heap buffer overflow can occur when processing a specially crafted EXR image file. This vulnerability is triggered by a channel-name key collision between literal and prefixed RGB channels, causing the software to write data beyond the...

Updated gdk-pixbuf2.0 packages fix security vulnerabilities

Heap‑buffer‑overflow in gdk‑pixbuf. CVE-2025-7345 Out-of-bounds read in ico parser. CVE-2026-16768 Invalid write in jpeg icc profile parser on error recovery. CVE-2026-81893...

MGASA-2026-0417 Updated gdk-pixbuf2.0 packages fix security vulnerabilities

Heap‑buffer‑overflow in gdk‑pixbuf. CVE-2025-7345 Out-of-bounds read in ico parser. CVE-2026-16768 Invalid write in jpeg icc profile parser on error recovery. CVE-2026-81893...

CVE-2026-77396 PJSIP: Heap buffer overflow in the AVI parser

PJSIP is a free and open source multimedia communication library written in C. In 2.17 and earlier, the PJSIP AVI parser in pjmedia/src/pjmedia/aviplayer.c uses an input-file video chunk length as the number of bytes copied into a frame buffer whose capacity is derived from the declared media...

CVE-2026-77396

PJSIP (a free and open source multimedia communication library in C) versions 2.17 and earlier contain a heap buffer overflow in the AVI parser at pjmedia/src/pjmedia/avi_player.c. The parser uses an input-file video chunk length as the number of bytes copied into a frame buffer whose capacity is...

CVE-2026-77396 PJSIP: Heap buffer overflow in the AVI parser

PJSIP is a free and open source multimedia communication library written in C. In 2.17 and earlier, the PJSIP AVI parser in pjmedia/src/pjmedia/aviplayer.c uses an input-file video chunk length as the number of bytes copied into a frame buffer whose capacity is derived from the declared media...

CVE-2026-77396 PJSIP: Heap buffer overflow in the AVI parser

PJSIP is a free and open source multimedia communication library written in C. In 2.17 and earlier, the PJSIP AVI parser in pjmedia/src/pjmedia/aviplayer.c uses an input-file video chunk length as the number of bytes copied into a frame buffer whose capacity is derived from the declared media...

CVE-2026-55556 Rsyslog: Heap buffer overflow in imhttp plugin Basic Authentication handling

Rsyslog is a rocket-fast system for log processing. From 8.2110.0 until 8.2604.0, the optional imhttp module's parseauthheader function in contrib/imhttp/imhttp.c allocates a zero-byte heap buffer with calloc0, len when an HTTP Basic Authorization value exceeds its fixed work buffer, then passes...

CVE-2026-55556 Rsyslog: Heap buffer overflow in imhttp plugin Basic Authentication handling

Rsyslog is a rocket-fast system for log processing. From 8.2110.0 until 8.2604.0, the optional imhttp module's parseauthheader function in contrib/imhttp/imhttp.c allocates a zero-byte heap buffer with calloc0, len when an HTTP Basic Authorization value exceeds its fixed work buffer, then passes...

CVE-2026-55556

Rsyslog versions 8.2110.0 through 8.2604.0 are affected by a heap buffer overflow in the optional imhttp module's parse_auth_header function (contrib/imhttp/imhttp.c). When an HTTP Basic Authorization value exceeds the fixed work buffer, calloc(0, len) allocates a zero-byte heap buffer that is th...

CVE-2026-55556 Rsyslog: Heap buffer overflow in imhttp plugin Basic Authentication handling

Rsyslog is a rocket-fast system for log processing. From 8.2110.0 until 8.2604.0, the optional imhttp module's parseauthheader function in contrib/imhttp/imhttp.c allocates a zero-byte heap buffer with calloc0, len when an HTTP Basic Authorization value exceeds its fixed work buffer, then passes...

CVE-2026-73863 NanoMQ: Heap-Buffer-Overflow in `nmq_subinfo_decode()` During MQTT v5 SUBSCRIBE Parsing

NanoMQ is an MQTT broker. Prior to 0.24.14, NanoMQ's broker-side MQTT v5 nmqsubinfodecode function in nng/src/sp/protocol/mqtt/mqttparser.c reuses lenofvarint from the outer Properties Length while parsing each SUBSCRIPTIONIDENTIFIER. A remote client can send a SUBSCRIBE packet with a multi-byte...

CVE-2026-73863 NanoMQ: Heap-Buffer-Overflow in `nmq_subinfo_decode()` During MQTT v5 SUBSCRIBE Parsing

NanoMQ is an MQTT broker. Prior to 0.24.14, NanoMQ's broker-side MQTT v5 nmqsubinfodecode function in nng/src/sp/protocol/mqtt/mqttparser.c reuses lenofvarint from the outer Properties Length while parsing each SUBSCRIPTIONIDENTIFIER. A remote client can send a SUBSCRIBE packet with a multi-byte...

CVE-2026-73863

NanoMQ, an MQTT broker, contains a heap-buffer-overflow in the broker-side function nmq_subinfo_decode() located in nng/src/sp/protocol/mqtt/mqtt_parser.c. The root cause is an incorrect reuse of the len_of_varint value from the outer Properties Length field when parsing repeated SUBSCRIPTION_IDE...

CVE-2026-73863 NanoMQ: Heap-Buffer-Overflow in `nmq_subinfo_decode()` During MQTT v5 SUBSCRIBE Parsing

NanoMQ is an MQTT broker. Prior to 0.24.14, NanoMQ's broker-side MQTT v5 nmqsubinfodecode function in nng/src/sp/protocol/mqtt/mqttparser.c reuses lenofvarint from the outer Properties Length while parsing each SUBSCRIPTIONIDENTIFIER. A remote client can send a SUBSCRIBE packet with a multi-byte...

CVE-2026-10858

IBM MQ for HPE NonStop 8.1.0 through 8.1.0.40 could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to a heap buffer underflow when processing multi-segment messages...

CVE-2026-10575

IBM MQ could allow an authenticated attacker to cause a denial of service or potentially escalate privileges due to a heap buffer overflow when processing MQPUT operations with malformed distribution headers...

CVE-2026-10747

IBM MQ Appliance could allow a remote attacker to cause a denial of service or potentially execute arbitrary code due to a heap buffer overflow in protocol message processing before authentication...

CVE-2026-84444

libheif is a HEIF and AVIF file format decoder and encoder. Prior to 1.23.2, when WITHUNCOMPRESSEDCODEC is enabled, heifcontextaddimagetile accepts an independently constructed tile whose component-plane dimensions do not match the tile geometry established by the prototype image...