CVE-2026-5244

Cesanta Mongoose TLS 1.3 mongoose.c mg_tls_recv_cert heap-based overflow

A vulnerability has been found in Cesanta Mongoose up to 7.20. This affects the function mg_tls_recv_cert of the file mongoose.c of the component TLS 1.3 Handler. Such manipulation of the argument pubkey leads to heap-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 7.21 mitigates this issue. The name of the patch is 0d882f1b43ff2308b7486a56a9d60cd6dba8a3f1. It is advisable to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

Vendors

Cesanta

Products

Mongoose

CVE-2026-5275

chromium-browser: Heap buffer overflow in ANGLE

Heap buffer overflow in ANGLE in Google Chrome on Mac prior to 146.0.7680.178 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: High)

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Vendors

Apple Google Linux and 1 more

Products

Macos Chrome Linux Kernel and 1 more

CVE-2026-5272

chromium-browser: Heap buffer overflow in GPU

Heap buffer overflow in GPU in Google Chrome prior to 146.0.7680.178 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: High)

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Vendors

Apple Google Linux and 1 more

Products

Macos Chrome Linux Kernel and 1 more

CVE-2026-28842

Buffer Overflow Causing Memory Corruption in macOS Tahoe

The issue was addressed with improved bounds checks. This issue is fixed in macOS Tahoe 26.4. A buffer overflow may result in memory corruption and unexpected app termination.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Apple

Products

Macos

CVE-2026-33984

FreeRDP: ClearCodec resize_vbar_entry() Heap OOB Write

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in resize_vbar_entry() in libfreerdp/codec/clear.c, vBarEntry->size is updated to vBarEntry->count before the winpr_aligned_recalloc() call. If realloc fails, size is inflated while pixels still points to the old, smaller buffer. On a subsequent call where count <= size (the inflated value), realloc is skipped. The caller then writes count * bpp bytes of attacker-controlled pixel data into the undersized buffer, causing a heap buffer overflow. This issue has been patched in version 3.24.2.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Freerdp

Products

Freerdp

CVE-2026-32710

Heap-based Buffer Overflow in MariaDB

MariaDB server is a community developed fork of MySQL server. An authenticated user can crash MariaDB versions 11.4 before 11.4.10 and 11.8 before 11.8.6 via a bug in JSON_SCHEMA_VALID() function. Under certain conditions it might be possible to turn the crash into a remote code execution. These conditions require tight control over memory layout which is generally only attainable in a lab environment. This issue is fixed in MariaDB 11.4.10, MariaDB 11.8.6, and MariaDB 12.2.2.

CVSS 3.1 · 8.6 High EPSS < 1% KEV · Not listed

Vendors

Mariadb

Products

Mariadb Server

CVE-2026-33986

FreeRDP: H.264 YUV Buffer Dimension Desync - Heap OOB Write

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in yuv_ensure_buffer() in libfreerdp/codec/h264.c, h264->width and h264->height are updated before the reallocation loop. If any winpr_aligned_recalloc() call fails, the function returns FALSE but width/height are already inflated. This issue has been patched in version 3.24.2.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Freerdp

Products

Freerdp

CVE-2026-33987

FreeRDP: Persistent Cache bmpSize Desync - Heap OOB Write

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in persistent_cache_read_entry_v3() in libfreerdp/cache/persistent.c, persistent->bmpSize is updated before winpr_aligned_recalloc(). If realloc fails, bmpSize is inflated while bmpData points to the old buffer. This issue has been patched in version 3.24.2.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed

Vendors

Freerdp

Products

Freerdp

CVE-2026-26073

EVerest: OCPP 1.6 heap corruption caused by lock-free insertion in event_queue

EVerest is an EV charging software stack. Versions prior to 2026.02.0 have a data race leading to possible `std::queue`/`std::deque` corruption. The trigger is powermeter public key update and EV session/error events (while OCPP not started). This results in a TSAN data race report and an ASAN/UBSAN misaligned address runtime error being observed. Version 2026.02.0 contains a patch.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed

Vendors

Everest Linuxfoundation

Products

Everest-core Everest

CVE-2022-24450

nats-server: misusing the "dynamically provisioned sandbox accounts" feature authenticated user can obtain the privileges of the System account

NATS nats-server before 2.7.2 has Incorrect Access Control. Any authenticated user can obtain the privileges of the System account by misusing the "dynamically provisioned sandbox accounts" feature.

CVSS 3.1 · 8.8 High EPSS 1.3% KEV · Not listed

Vendors

Linuxfoundation Nats Redhat

Products

Nats-server Nats Streaming Server Acm

CVE-2026-33249

NATS: Message tracing can be redirected to arbitrary subject

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Starting in version 2.11.0 and prior to versions 2.11.15 and 2.12.6, a valid client which uses message tracing headers can indicate that the trace messages can be sent to an arbitrary valid subject, including those to which the client does not have publish permission. The payload is a valid trace message and not chosen by the attacker. Versions 2.11.15 and 2.12.6 contain a fix. No known workarounds are available.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Linuxfoundation Nats

Products

Nats-server Nats Server

CVE-2026-4395

Heap-based buffer overflow in wc_ecc_import_x963_ex KCAPI path

Heap-based buffer overflow in the KCAPI ECC code path of wc_ecc_import_x963_ex() in wolfSSL wolfcrypt allows a remote attacker to write attacker-controlled data past the bounds of the pubkey_raw buffer via a crafted oversized EC public key point. The WOLFSSL_KCAPI_ECC code path copies the input to key->pubkey_raw (132 bytes) using XMEMCPY without a bounds check, unlike the ATECC code path which includes a length validation. This can be triggered during TLS key exchange when a malicious peer sends a crafted ECPoint in ServerKeyExchange.

CVSS 4.0 · 1.3 Low EPSS < 1% KEV · Not listed

Vendors

Wolfssl

Products

Wolfssl

CVE-2026-3229

Integer Overflow in Certificate Chain Allocation

An integer overflow vulnerability existed in the static function wolfssl_add_to_chain, that caused heap corruption when certificate data was written out of bounds of an insufficiently sized certificate buffer. wolfssl_add_to_chain is called by these API: wolfSSL_CTX_add_extra_chain_cert, wolfSSL_CTX_add1_chain_cert, wolfSSL_add0_chain_cert. These API are enabled for 3rd party compatibility features: enable-opensslall, enable-opensslextra, enable-lighty, enable-stunnel, enable-nginx, enable-haproxy. This issue is not remotely exploitable, and would require that the application context loading certificates is compromised.

CVSS 4.0 · 1.2 Low EPSS < 1% KEV · Not listed

Vendors

Wolfssl

Products

Wolfssl

CVE-2026-27654

NGINX ngx_http_dav_module vulnerability

NGINX Open Source and NGINX Plus have a vulnerability in the ngx_http_dav_module module that might allow an attacker to trigger a buffer overflow to the NGINX worker process; this vulnerability may result in termination of the NGINX worker process or modification of source or destination file names outside the document root. This issue affects NGINX Open Source and NGINX Plus when the configuration file uses DAV module MOVE or COPY methods, prefix location (nonregular expression location configuration), and alias directives. The integrity impact is constrained because the NGINX worker process user has low privileges and does not have access to the entire system. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVSS 4.0 · 8.8 High EPSS 26.5% KEV · Not listed

Vendors

F5

Products

Nginx Open Source Nginx Plus

CVE-2025-10685

HTTP POST with specific higher content length leads into heap corruption

Heap-based buffer overflow vulnerability in Softing Industrial Automation GmbH smartLink SW-PN and smartLink SW-HT (Webserver modules) allows overflow buffers.This issue affects: smartLink SW-PN: through 1.03 smartLink SW-HT: through 1.42

CVSS 4.0 · 7.7 High EPSS < 1% KEV · Not listed

Vendors

Softing

Products

Smartlink Sw-ht Smartlink Sw-pn

CVE-2026-3549

ECH parsing heap buffer overflow

Heap Overflow in TLS 1.3 ECH parsing. An integer underflow existed in ECH extension parsing logic when calculating a buffer length, which resulted in writing beyond the bounds of an allocated buffer. Note that in wolfSSL, ECH is off by default, and the ECH standard is still evolving.

CVSS 4.0 · 8.3 High EPSS < 1% KEV · Not listed

Vendors

Wolfssl

Products

Wolfssl

CVE-2026-4673

chromium-browser: Heap buffer overflow in WebAudio

Heap buffer overflow in WebAudio in Google Chrome prior to 146.0.7680.165 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

Vendors

Apple Google Linux and 1 more

Products

Macos Chrome Linux Kernel and 1 more

CVE-2026-4675

chromium-browser: Heap buffer overflow in WebGL

Heap buffer overflow in WebGL in Google Chrome prior to 146.0.7680.165 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

Vendors

Apple Google Linux and 1 more

Products

Macos Chrome Linux Kernel and 1 more

CVE-2026-33164

NULL Pointer Dereference in libde265

libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.17, a malformed H.265 PPS NAL unit causes a segmentation fault in pic_parameter_set::set_derived_values(). This issue has been patched in version 1.0.17.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Struktur

Products

Libde265

CVE-2026-4442

chromium-browser: Heap buffer overflow in CSS

Heap buffer overflow in CSS in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Vendors

Apple Google Linux and 1 more

Products

Macos Chrome Linux Kernel and 1 more