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CVE-2026-20408

Remote WLAN Heap Buffer Overflow in MediaTek Chipsets

In wlan, there is a possible out of bounds write due to a heap buffer overflow. This could lead to remote (proximal/adjacent) escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00461651; Issue ID: MSV-4758.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
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Mt6890 Mt7615 Mt7915 and 5 more
CVE-2026-3281

libvips bandrank.c vips_bandrank_build heap-based overflow

A vulnerability was detected in libvips 8.19.0. This affects the function vips_bandrank_build of the file libvips/conversion/bandrank.c. Performing a manipulation of the argument index results in heap-based buffer overflow. The attack must be initiated from a local position. The exploit is now public and may be used. The patch is named fd28c5463697712cb0ab116a2c55e4f4d92c4088. It is suggested to install a patch to address this issue.

CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed
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CVE-2026-27286

InDesign Desktop | Heap-based Buffer Overflow (CWE-122)

InDesign Desktop versions 20.5.2, 21.2 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could lead to memory exposure. An attacker could leverage this vulnerability to disclose sensitive information stored in memory. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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CVE-2026-27285

InDesign Desktop | Heap-based Buffer Overflow (CWE-122)

InDesign Desktop versions 20.5.2, 21.2 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could lead to application denial-of-service. An attacker could exploit this vulnerability to crash the application or disrupt its functionality. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Products
CVE-2026-28420

Vim has Heap-based Buffer Overflow and OOB Read in :terminal

Vim is an open source, command line text editor. Prior to version 9.2.0076, a heap-based buffer overflow WRITE and an out-of-bounds READ exist in Vim's terminal emulator when processing maximum combining characters from Unicode supplementary planes. Version 9.2.0076 fixes the issue.

CVSS 3.1 · 4.4 Medium EPSS < 1% KEV · Not listed
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Vim
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Vim
CVE-2026-0006

In multiple locations, there is a possible out of bounds read and 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 · 9.8 Critical EPSS < 1% KEV · Not listed
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CVE-2026-22891

Heap Overflow in libbiosig Intan CLP Parsing Leading to Arbitrary Code Execution

A heap-based buffer overflow vulnerability exists in the Intan CLP parsing functionality of The Biosig Project libbiosig 3.9.2 and Master Branch (db9a9a63). A specially crafted Intan CLP file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Products
CVE-2026-3544

chromium-browser: Heap buffer overflow in WebCodecs

Heap buffer overflow in WebCodecs in Google Chrome prior to 145.0.7632.159 allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page. (Chromium security severity: High)

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
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Apple Google Linux and 1 more
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CVE-2026-28546

Buffer Overflow in HarmonyOS Scanning Module Causing Availability Issues

Buffer overflow vulnerability in the scanning module. Impact: Successful exploitation of this vulnerability may affect availability.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
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CVE-2026-28686

ImageMagick has a write heap-buffer-overflow in PCL encoder via undersized output buffer

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-16 and 6.9.13-41, A heap-buffer-overflow vulnerability exists in the PCL encode due to an undersized output buffer allocation. This vulnerability is fixed in 7.1.2-16 and 6.9.13-41.

CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
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CVE-2026-30936

ImageMagick has a heap Buffer Overflow in WaveletDenoiseImage

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-16 and 6.9.13-41, a crafted image could cause an out of bounds heap write inside the WaveletDenoiseImage method. When processing a crafted image with the -wavelet-denoise operation an out of bounds write can occur. This vulnerability is fixed in 7.1.2-16 and 6.9.13-41.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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CVE-2026-30979

iccDEV has a heap-based buffer overflow in CIccCalculatorFunc::InitSelectOp()

iccDEV provides a set of libraries and tools for working with ICC color management profiles. Prior to 2.3.1.5, there is a heap-based buffer overflow in CIccCalculatorFunc::InitSelectOp() triggered with local user interaction causing memory corruption/crash. This vulnerability is fixed in 2.3.1.5.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Products
CVE-2026-3915

chromium-browser: Heap buffer overflow in WebML

Heap buffer overflow in WebML in Google Chrome prior to 146.0.7680.71 allowed a remote attacker to perform an out of bounds memory read via a crafted HTML page. (Chromium security severity: High)

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
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Apple Google Linux and 1 more
Products
CVE-2026-20876

Windows Virtualization-Based Security (VBS) Enclave Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 6.7 Medium EPSS < 1% KEV · Not listed
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CVE-2026-20868

Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability

Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.

CVSS 3.1 · 8.8 High EPSS 1.4% KEV · Not listed
Vendors
CVE-2026-35199

SymCrypt SymCryptXmssSign function - Heap overflow via 64->32-bit leaf-count truncation

SymCrypt is the core cryptographic function library currently used by Windows. From 103.5.0 to before 103.11.0, The SymCryptXmssSign function passes a 64-bit leaf count value to a helper function that accepts a 32-bit parameter. For XMSS^MT parameter sets with total tree height >= 32 (which includes standard predefined parameters), this causes silent truncation to zero, resulting in a drastically undersized scratch buffer allocation followed by a heap buffer overflow during signature computation. Exploiting this issue would require an application using SymCrypt to perform an XMSS^MT signature using an attacker-controlled parameter set. It is uncommon for applications to allow the use of attacker-controlled parameter sets for signing, since signing is a private key operation, and private keys must be trusted by definition. Additionally, XMSS(^MT) signing should only be performed in a Hardware Security Module (HSM). XMSS(^MT) signing is provided in SymCrypt only for testing purposes. This is a general rule irrespective of this CVE; XMSS(^MT) and other stateful signature schemes are only cryptographically secure when it is guaranteed that the same state cannot be reused for two different signatures, which cannot be guaranteed by software alone. For this reason, XMSS(^MT) signing is also not FIPS approved when performed outside of an HSM. Fixed in version 103.11.0.

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
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CVE-2026-30982

iccDEV has a heap out-of-bounds read in CIccPcsXform::pushXYZConvert()

iccDEV provides a set of libraries and tools for working with ICC color management profiles. Prior to 2.3.1.5, there is a heap out-of-bounds read in CIccPcsXform::pushXYZConvert() causing crash and potentially leaking memory contents. This vulnerability is fixed in 2.3.1.5.

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Products
CVE-2026-27271

Illustrator | Heap-based Buffer Overflow (CWE-122)

Illustrator versions 29.8.4, 30.1 and earlier are 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.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
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CVE-2026-3913

chromium-browser: Heap buffer overflow in WebML

Heap buffer overflow in WebML in Google Chrome prior to 146.0.7680.71 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Critical)

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
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Apple Google Linux and 1 more
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