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CVE-2026-15170

Heap-based Buffer Overflow in Wireshark

Z39.50 protocol dissector crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Wireshark
Products
Wireshark
CVE-2026-15169

Heap-based Buffer Overflow in Wireshark

UMTS FP protocol dissector crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Wireshark
Products
Wireshark
CVE-2026-15174

Heap-based Buffer Overflow in Wireshark

Catapult DCT2000 protocol dissector crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Wireshark
Products
Wireshark
CVE-2026-44808

Windows DWM Core Library Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Microsoft
Products
Windows 11 26h1 Windows 11 26h1
CVE-2026-44811

Windows DWM Core Library Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Microsoft
Products
Windows 11 26h1 Windows 11 26h1
CVE-2026-47635

Microsoft Outlook and Word Remote Code Execution Vulnerability

Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.

CVSS 3.1 · 8.4 High EPSS < 1% KEV · Not listed
Vendors
Microsoft
Products
Office 2024
CVE-2026-55999

xorg-server / xwayland glamor font atlas Heap Buffer Overflow

Local attackers with a X connection able to provide PCX fonts to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a heap buffer overflow via SetFont due to missing glyph boundary checks.

CVSS 3.1 · 8.5 High EPSS < 1% KEV · Not listed
Vendors
X.org
Products
X Server Xorg-server Xwayland
CVE-2026-13574

llvm llvm-project Bitcode File IntrinsicInst.cpp getBasePtr heap-based overflow

A vulnerability was determined in llvm llvm-project up to 22.1.6. This impacts the function GCRelocateInst::getBasePtr in the library llvm/lib/IR/IntrinsicInst.cpp of the component Bitcode File Handler. This manipulation causes heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been publicly disclosed and may be utilized. There are still doubts about whether this vulnerability truly exists. The LLVM project explains, that the reported behavior is outside its documented security scope and therefore not considered a security vulnerability.

CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed
Vendors
Llvm
Products
Llvm-project
CVE-2025-15668

GPAC MP4Box box_code_base.c sgpd_del_entry heap-based overflow

A vulnerability was identified in GPAC up to b40ce70f5. This issue affects the function sgpd_del_entry of the file src/isomedia/box_code_base.c of the component MP4Box. Such manipulation of the argument data leads to heap-based buffer overflow. Local access is required to approach this attack. The exploit is publicly available and might be used. The name of the patch is f29f955f2a3b5e8e507caad3e52319f961bf37bf. It is advisable to implement a patch to correct this issue.

CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed
Vendors
Gpac
Products
Gpac
CVE-2025-15666

Open Asset Import Library Assimp Model File SceneCombiner.cpp Copy heap-based overflow

A security vulnerability has been detected in Open Asset Import Library Assimp up to 5.4.3. Affected by this vulnerability is the function Assimp::SceneCombiner::Copy of the file code/Common/SceneCombiner.cpp of the component Model File Handler. Such manipulation of the argument width/height leads to heap-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed publicly and may be used. This and similar defects are tracked and handled via issue #6128.

CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed
Vendors
Assimp Open Asset Import Library
Products
Assimp Assimp
CVE-2026-14759

radareorg radare2 RBinJava Line Number Table class.c r_bin_java_inner_classes_attr_calc_size heap-based overflow

A security flaw has been discovered in radareorg radare2 up to 6.1.6. This issue affects the function r_bin_java_inner_classes_attr_calc_size of the file shlr/java/class.c of the component RBinJava Line Number Table Parser. Performing a manipulation results in heap-based buffer overflow. The attack requires a local approach. The exploit has been released to the public and may be used for attacks. The patch is named cd62d15a6cbecdc67fd03f3ebdbbbeb741d18f87. To fix this issue, it is recommended to deploy a patch.

CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed
Vendors
Radare Radareorg
Products
Radare2 Radare2
CVE-2026-56645

Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

Heap-based buffer overflow in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Microsoft
Products
Edge Chromium
CVE-2026-14610

Open Asset Import Library Assimp CSM File CSMLoader.cpp InternReadFile heap-based overflow

A flaw has been found in Open Asset Import Library Assimp up to 6.0.5. Impacted is the function Assimp::CSMImporter::InternReadFile of the file code/AssetLib/CSM/CSMLoader.cpp of the component CSM File Handler. This manipulation causes heap-based buffer overflow. The attack is restricted to local execution. The exploit has been published and may be used. Patch name: eb84eec580d3f4ba2f0fd87409b7d0744620f11e. Applying a patch is the recommended action to fix this issue.

CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed
Vendors
Assimp
Products
Assimp
CVE-2026-14355

ext/openssl: Memory corruption in openssl_encrypt with AES-WRAP-PAD

In PHP versions 8.2.* before 8.2.32, 8.3.* before 8.3.32, 8.4.* before 8.4.23, 8.5.* before 8.5.8, the AES-WRAP-PAD algorithm implementation in OpenSSL extension contains a buffer allocation flaw. The output buffer for the AES key-wrap-with-padding operation is sized from the plaintext length without accounting for RFC 5649 expansion. This may cause OpenSSL to write beyond allocated memory, corrupting heap metadata and triggering application abort.

CVSS 3.1 · 5.6 Medium EPSS < 1% KEV · Not listed
Vendors
Debian Php
Products
Debian Linux Php
CVE-2026-45638

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Microsoft
Products
Windows 10 1607 Windows 10 1809 Windows 10 21h2 and 23 more
CVE-2026-54896

Oj: Heap Buffer Overflow in Oj.dump Exception Serialization via Large Indent

Oj (Optimized JSON) is a JSON parser and Object marshaller packaged as a Ruby gem. In versions prior to 3.17.2, when in object mode, Oj.dump is vulnerable to a heap buffer overflow when serializing Exception objects with a large :indent value. The serializer allocates a buffer sized for the object's attributes but does not account for the indent bytes added on each write. With indent: 5000, the accumulation of 5,000-byte indent strings overflows the 13,150-byte heap allocation, corrupting adjacent heap memory. This issue has been fixed in version 3.17.2.

CVSS 4.0 · 2.1 Low EPSS < 1% KEV · Not listed
Vendors
Ohler
Products
Oj
CVE-2026-54696

Ruby JSON: JSON generator heap buffer overflow when streaming to an IO

Ruby JSON is a JSON implementation for Ruby. Versions 2.9.0 through 2.19.8 are vulnerable to heap buffer overflow when the JSON generator is provided with an oversized streamed object. When streaming to an IO JSON.dump(obj, io) and JSON::State#generate(obj, io) can write past the internal JSON generator buffer when a streamed object contains an attacker-controlled string near 16 KB. Exploitation would result in a reliable process crash/denial of service. This issue has been fixed in version 2.19.9.

CVSS 3.1 · 3.7 Low EPSS < 1% KEV · Not listed
Vendors
Ruby
Products
Json
CVE-2026-54475

Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ: Temporary destination ownership takeover

Missing Authorization vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ. Apache ActiveMQ Classic temporary destinations are expected to be isolated to the connection that created them. The isolation can be broken as this is only checked in the client, allowing a different connection to consume from another connection's temporary destination. This issue affects Apache ActiveMQ Broker: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ All: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ: before 5.19.8, from 6.0.0 before 6.2.7. Users are recommended to upgrade to version 6.2.7, which fixes the issue.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Apache
Products
Activemq Activemq All Activemq Broker