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CVE-2026-121941

libmt32emu before 2.8.4 Heap Buffer Overflow via MidiStreamParserImpl::parseSysex

libmt32emu before 2.8.4 contains a heap buffer overflow vulnerability in MidiStreamParserImpl::parseSysex that allows attackers to write past a heap allocation by supplying oversized unterminated SysEx messages. Attackers can feed more than 32768 SysEx data bytes through the mt32emu_parse_stream API via MIDI files, ports, or sequencer clients to corrupt heap memory and crash the application.

CVSS 4.0 · 8.5 High EPSS < 1% KEV · Not listed
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CVE-2026-120775

Tanium addressed a heap-based buffer overflow vulnerability in Deploy.

Tanium addressed a heap-based buffer overflow vulnerability in Deploy.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
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CVE-2026-120431

Netpbm before 10.86.51, 11.02.29, and 11.15.07 sgitopnm Heap Buffer Overflow

Netpbm before 10.86.51, 11.x before 11.02.29, and 11.03 before 11.15.07 contains a heap-based buffer overflow in sgitopnm's readChannels() function when processing RLE-compressed SGI images. Attackers can supply crafted SGI files with oversized offset table lengths to write controlled data past the heap buffer, causing crashes or potential code execution.

CVSS 4.0 · 8.5 High EPSS < 1% KEV · Not listed
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CVE-2026-93536

X.Org Server GestureBuildSprite Use-After-Free

A use after free caused by missing lifecycle management of gesture sprites in GestureBuildSprite() in X.Org X Server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash the X server or potentially execute code.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
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CVE-2026-114549

NoMachine nxwebrunner Heap-based Buffer Overflow Remote Code Execution Vulnerability

NoMachine nxwebrunner Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of NoMachine. Authentication is not required to exploit this vulnerability. The specific flaw exists within the web service, which listens on TCP port 4443 by default. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-30685.

CVSS 3.0 · 9.8 Critical EPSS < 1% KEV · Not listed
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CVE-2025-5915

Libarchive: heap buffer over read in copy_from_lzss_window() at archive_read_support_format_rar.c

A vulnerability has been identified in the libarchive library. This flaw can lead to a heap buffer over-read due to the size of a filter block potentially exceeding the Lempel-Ziv-Storer-Schieber (LZSS) window. This means the library may attempt to read beyond the allocated memory buffer, which can result in unpredictable program behavior, crashes (denial of service), or the disclosure of sensitive information from adjacent memory regions.

CVSS 3.1 · 6.6 Medium EPSS < 1% KEV · Not listed
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CVE-2026-11792

389-ds-base: 389-ds-base: heap buffer overflow in audit log password masking (create_masked_entry_string)

A heap buffer overflow flaw was found in 389 Directory Server. When audit logging is enabled, the create_masked_entry_string() function in auditlog.c copies a fixed-length password mask into a precisely-sized heap buffer without checking available space. If a short cleartext password is logged (requiring non-default CLEAR password storage or a compromised replication peer), the copy overflows the buffer, corrupting heap memory and audit log output.

CVSS 3.1 · 3.3 Low EPSS < 1% KEV · Not listed
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CVE-2026-80757

selinux: reject a class permission count below its inherited common

In the Linux kernel, the following vulnerability has been resolved: selinux: reject a class permission count below its inherited common security_get_permissions() maps an inherited common's permissions into an array sized by the class's own permissions.nprim, but class_read() takes that nprim verbatim from the policy image and never checks that it covers the common. A class that inherits a common of N permissions while declaring a smaller nprim is accepted, and on load the common's permissions are written past the class-sized array -- an out-of-bounds heap write. Reject a class whose permission count is below its inherited common's. Well-formed policies, where the class count already includes the inherited permissions, are unaffected.

CVSS n/a EPSS < 1% KEV · Not listed
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CVE-2026-74676

vt: add permission check for KDSKBMETA ioctl

In the Linux kernel, the following vulnerability has been resolved: vt: add permission check for KDSKBMETA ioctl KDSKBMETA modifies keyboard meta mode but lacks the !perm check that all other keyboard setter ioctls in vt_k_ioctl() enforce, allowing a process to change meta mode on a non-controlling console without authorization.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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CVE-2026-58835

In cfg2prop of btif_storage.cc, there is a possible out-of-bounds write due to a heap buffer overflow. This could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
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CVE-2026-0100

Heap Buffer Overflow Leading to Local Privilege Escalation in Android Resource Loader

In Load of LoadedArsc.cpp, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
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CVE-2026-112109

Local privilege escalation in SafeNet Authentication Client SACSrv

A local privilege escalation vulnerability in Thales SafeNet Authentication Client (SAC) SACSrv can allow an authenticated, non-administrator local user to trigger a heap-based buffer overflow through the service interface. Successful exploitation may allow arbitrary code execution with Local System privileges.This issue affects SAC releases up to and including 10.9 R3 GA (build 10.9.7449).

CVSS 4.0 · 7.3 High EPSS < 1% KEV · Not listed
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CVE-2026-0059

In multiple functions of sdp_discovery.cc, there is a possible way to achieve code execution due to a heap buffer overflow. This could lead to remote (proximal/adjacent) code execution with no additional execution privileges needed. User interaction is not needed for exploitation.

CVSS 3.1 · 8 High EPSS < 1% KEV · Not listed
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CVE-2026-119627

Gitea limited-visibility profile disclosure with public-only tokens

The web profile and RSS/Atom feed routes of users and organizations checked only whether a signed-in viewer could see a limited-visibility owner, without considering the `public-only` restriction of the personal access token used to authenticate. Any user holding a public-only token could send it over HTTP Basic authentication to read the profile and activity feed of limited-visibility users and organizations, which are hidden from anonymous visitors and refused on the equivalent API routes. The disclosure covers existence, profile metadata and public activity; it does not grant write access.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
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CVE-2024-8443

Libopensc: heap buffer overflow in openpgp driver when generating key

A heap-based buffer overflow vulnerability was found in the libopensc OpenPGP driver. A crafted USB device or smart card with malicious responses to the APDUs during the card enrollment process using the `pkcs15-init` tool may lead to out-of-bound rights, possibly resulting in arbitrary code execution.

CVSS 3.1 · 2.9 Low EPSS < 1% KEV · Not listed
CVE-2026-102212

Pre-Auth Heap Buffer Overflow in the Multipart Request

Heap-based buffer overflow in Opengear IM72XX, CM71XX, and ACM70XX firmware versions 4.8.0 through 5.5.2 on console server appliances allows an unauthenticated remote attacker to crash the index.cgi process via a crafted multipart/form-data POST request containing an overlong Content-Disposition name field.

CVSS 4.0 · 8.4 High EPSS < 1% KEV · Not listed
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CVE-2026-122126

reSIProcate reTurn client through 1.14.0 Heap Buffer Overflow via TurnTcpSocket

reSIProcate reTurn client through 1.14.0 contains a heap buffer overflow in TurnTcpSocket::handleReadHeader(), which TurnTlsSocket inherits, that allows malicious TURN servers or on-path attackers to overwrite memory via oversized frame lengths. Attackers can send STUN or ChannelData frames declaring up to 65535 bytes, writing roughly 57 KB past the fixed 8192-byte mReadBuffer and crashing the client. Only the synchronous TCP and TLS client is affected; the asynchronous client (TurnAsyncSocket) and the reTurn server are not.

CVSS 4.0 · 8.2 High EPSS < 1% KEV · Not listed
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CVE-2026-56208

Libaom: libaom: heap buffer overflow in av1 encoder first-pass stats buffer via lap mode

A heap buffer overflow vulnerability was found in libaom, the reference AV1 codec implementation. A flaw in the AV1 encoder's Look-Ahead Processing (LAP) mode causes the first-pass stats ring buffer wrap-around guard to be bypassed when g_lag_in_frames is set to 1 or higher. This results in a 232-byte out-of-bounds write on every encoded frame after the second, corrupting adjacent heap objects. An attacker who can influence encoder configuration in a transcoding service or WebRTC session could exploit this to cause a denial of service (process crash) or potentially achieve code execution.

CVSS 3.1 · 7.6 High EPSS < 1% KEV · Not listed
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CVE-2026-9149

Libsolv: heap buffer overflow in libsolv repo_add_solv via negative maxsize from crafted .solv file

A flaw was found in libsolv. This heap buffer overflow vulnerability occurs when a victim processes a specially crafted `.solv` file containing negative size values in the `repo_add_solv` function. This leads to an undersized memory allocation and a subsequent out-of-bounds write. An attacker could exploit this to cause a denial of service (DoS).

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed