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CVE-2026-40169 Medium · 5.5 CWE-122 Apr 13, 2026
ImageMagick: Heap buffer overflow (WRITE) in the YAML and JSON encoders
ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below 7.1.2-19, a crafted image could result in an out of bounds heap write when writing a yaml or json output, resulting in a crash. This issue has been fixed in version 7.1.2-19.
CVE-2026-33901 High · 7.5 CWE-122 Apr 13, 2026
ImageMagick has a Heap Buffer Overflow via MVG decoder
ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below both 7.1.2-19 and 6.9.13-44, a heap buffer overflow occurs in the MVG decoder that could result in an out of bounds write when processing a crafted image. This issue has been fixed in versions 6.9.13-44 and 7.1.2-19.
CVE-2026-33899 Medium · 5.3 CWE-122 Apr 13, 2026
ImageMagick: Heap BufferOverflow write of single zero byte when parsing XML
ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below 7.1.2-189 and 6.9.13-44, when `Magick` parses an XML file it is possible that a single zero byte is written out of the bounds. This issue has been fixed in versions 6.9.13-44 and 7.1.2-19.
CVE-2026-32316 High · 7.5 CWE-122 Apr 13, 2026
jq: Integer overflow in jvp_string_append() allows Heap-based Buffer Overflow
jq is a command-line JSON processor. An integer overflow vulnerability exists through version 1.8.1 within the jvp_string_append() and jvp_string_copy_replace_bad functions, where concatenating strings with a combined length exceeding 2^31 bytes causes a 32-bit unsigned integer overflow in the buffer allocation size calculation, resulting in a drastically undersized heap buffer. Subsequent memory copy operations then write the full string data into this undersized buffer, causing a heap buffer overflow classified as CWE-190 (Integer Overflow) leading to CWE-122 (Heap-based Buffer Overflow). Any system evaluating untrusted jq queries is affected, as an attacker can crash the process or potentially achieve further exploitation through heap corruption by crafting queries that produce extremely large strings. The root cause is the absence of string size bounds checking, unlike arrays and objects which already have size limits. The issue has been addressed in commit e47e56d226519635768e6aab2f38f0ab037c09e5.
CVE-2026-30999 High · 7.5 CWE-122 Apr 13, 2026
Heap-based Buffer Overflow in Ffmpeg
A heap buffer overflow in the av_bprint_finalize() function of FFmpeg v8.0.1 allows attackers to cause a Denial of Service (DoS) via a crafted input.
CVE-2026-34865 Critical · 9.1 CWE-122 Apr 13, 2026
Out-of-bounds write vulnerability in the WEB module.Impact: Successful exploitation of this...
Out-of-bounds write vulnerability in the WEB module.Impact: Successful exploitation of this vulnerability will affect availability and confidentiality.
CVE-2026-25205 Critical · 9.8 CWE-122 Apr 13, 2026
Samsung Open Source Escargot heap-based buffer overflow
Heap-based buffer overflow vulnerability in Samsung Open Source Escargot allows out-of-bounds write.This issue affects Escargot:commit hash  97e8115ab1110bc502b4b5e4a0c689a71520d335 .
CVE-2026-4153 High · 7.8 CWE-122 Apr 10, 2026
GIMP PSP File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
GIMP PSP File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of PSP files. 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 current process. Was ZDI-CAN-28874.
CVE-2026-4152 High · 7.8 CWE-122 Apr 10, 2026
GIMP JP2 File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
GIMP JP2 File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of JP2 files. 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 current process. Was ZDI-CAN-28863.
CVE-2026-29043 Medium · 5.5 CWE-122 Apr 10, 2026
HDF5 H5T__ref_mem_setnull Heap Buffer Overflow
HDF5 is software for managing data. In 1.14.1-2 and earlier, an attacker who can control an h5 file parsed by HDF5 can trigger a write-based heap buffer overflow condition in the H5T__ref_mem_setnull method. This can lead to a denial-of-service condition, and potentially further issues such as remote code execution depending on the practical exploitability of the heap overflow against modern operating systems.
CVE-2026-5448 Medium · 4.3 CWE-122 Apr 9, 2026
1-2 Byte Buffer Overflow in wolfSSL_X509_notAfter/notBefore
X.509 date buffer overflow in wolfSSL_X509_notAfter / wolfSSL_X509_notBefore. A buffer overflow may occur when parsing date fields from a crafted X.509 certificate via the compatibility layer API. This is only triggered when calling these two APIs directly from an application, and does not affect TLS or certificate verify operations in wolfSSL.
CVE-2026-5264 Critical · 9.8 CWE-122 Apr 9, 2026
DTLS 1.3 ACK heap buffer overflow
Heap buffer overflow in DTLS 1.3 ACK message processing. A remote attacker can send a crafted DTLS 1.3 ACK message that triggers a heap buffer overflow.
CVE-2026-5447 High · 7.5 CWE-122 Apr 9, 2026
Heap buffer overflow in CertFromX509() via AuthorityKeyIdentifier
Heap buffer overflow in CertFromX509 via AuthorityKeyIdentifier size confusion. A heap buffer overflow occurs when converting an X.509 certificate internally due to incorrect size handling of the AuthorityKeyIdentifier extension.
CVE-2026-5187 Critical · 9.8 CWE-122 Apr 9, 2026
Heap Out-of-Bounds Write in DecodeObjectId() in wolfSSL
Two potential heap out-of-bounds write locations existed in DecodeObjectId() in wolfcrypt/src/asn.c. First, a bounds check only validates one available slot before writing two OID arc values (out[0] and out[1]), enabling a 2-byte out-of-bounds write when outSz equals 1. Second, multiple callers pass sizeof(decOid) (64 bytes on 64-bit platforms) instead of the element count MAX_OID_SZ (32), causing the function to accept crafted OIDs with 33 or more arcs that write past the end of the allocated buffer.
CVE-2026-5869 Medium · 4.3 CWE-122 Apr 8, 2026
Heap-based Buffer Overflow in Google Chrome
Heap buffer overflow in WebML in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: High)
CVE-2026-5868 High · 8.8 CWE-122 Apr 8, 2026
Heap-based Buffer Overflow in Google Chrome
Heap buffer overflow in ANGLE in Google Chrome on Mac prior to 147.0.7727.55 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
CVE-2026-5867 Medium · 4.3 CWE-122 Apr 8, 2026
Heap-based Buffer Overflow in Google Chrome
Heap buffer overflow in WebML in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: High)
CVE-2026-5864 Medium · 4.3 CWE-122 Apr 8, 2026
Heap-based Buffer Overflow in Google Chrome
Heap buffer overflow in WebAudio in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: High)
CVE-2026-5858 High · 8.8 CWE-122 Apr 8, 2026
Heap-based Buffer Overflow in Google Chrome
Heap buffer overflow in WebML in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: Critical)
CVE-2026-35199 Medium · 6.1 CWE-122 Apr 6, 2026
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.
CVE-2026-21372 High · 7.8 CWE-122 Apr 6, 2026
Heap-Based Buffer Overflow in Power Management IC
Memory Corruption when sending IOCTL requests with invalid buffer sizes during memcpy operations.
CVE-2026-34979 Medium · 5.3 CWE-122 Apr 3, 2026
OpenPrinting CUPS: Heap overflow in `get_options()`
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, there is a heap-based buffer overflow in the CUPS scheduler when building filter option strings from job attribute. At time of publication, there are no publicly available patches.
CVE-2026-34743 Medium · 5.3 CWE-122 Apr 2, 2026
XZ Utils: Buffer overflow in lzma_index_append()
XZ Utils provide a general-purpose data-compression library plus command-line tools. Prior to version 5.8.3, if lzma_index_decoder() was used to decode an Index that contained no Records, the resulting lzma_index was left in a state where where a subsequent lzma_index_append() would allocate too little memory, and a buffer overflow would occur. This issue has been patched in version 5.8.3.
CVE-2026-34120 Medium · 6.5 CWE-122 Apr 2, 2026
Heap-based Buffer Overflow Vulnerability Leading to Denial-of-Service in TP-Link Tapo C520WS
A heap-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 within the asynchronous parsing of local video stream content due to insufficient alignment and validation of buffer boundaries when processing streaming inputs.An attacker on the same network segment could trigger heap memory corruption conditions by sending crafted payloads that cause write operations beyond allocated buffer boundaries.  Successful exploitation causes a Denial-of-Service (DoS) condition, causing the device’s process to crash or become unresponsive.
CVE-2026-34119 Medium · 6.5 CWE-122 Apr 2, 2026
Heap-based Buffer Overflow Vulnerability Leading to Denial-of-Service in TP-Link Tapo C520WS
A heap-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 within the HTTP parsing loop when appending segmented request bodies without continuous write‑boundary verification, due to insufficient boundary validation when handling externally supplied HTTP input.  An attacker on the same network segment could trigger heap memory corruption conditions by sending crafted payloads that cause write operations beyond allocated buffer boundaries.  Successful exploitation causes a Denial-of-Service (DoS) condition, causing the device’s process to crash or become unresponsive.