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CVE-2026-64909

Microsoft Office Remote Code Execution Vulnerability

Integer underflow (wrap or wraparound) in Microsoft Office allows an unauthorized attacker to execute code locally.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Microsoft
Products
365 Apps Microsoft 365 Office 2016 and 6 more
CVE-2026-70633

TimescaleDB 2.29.1 Out-of-Bounds Read DoS via Gorilla Compression Reverse Iterator

TimescaleDB through 2.29.1, fixed in commit 517c13e, contains an out-of-bounds read vulnerability in the Gorilla compression reverse row iterator that allows authenticated attackers to cause a denial of service by storing a crafted compressed datum with an internally inconsistent BitArray. Attackers with DML access to a compressed hypertable can trigger an unsigned integer wraparound in the reverse iterator bucket index computation, causing a read beyond the end of the bucket array, resulting in a SIGSEGV crash that can be repeatedly triggered on each subsequent reverse-order scan.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Timescale
Products
Timescaledb
CVE-2026-43628

llama.cpp b3978–b9058 Integer Underflow via DRY Sampler

llama.cpp builds b3978 through b9058 contain an integer underflow and out-of-bounds read vulnerability in the DRY sampler that allows unauthenticated attackers to trigger a heap buffer underflow by sending a crafted HTTP request with dry_allowed_length set to INT32_MIN to the /v1/completions or /v1/chat/completions endpoints. Attackers can exploit this vulnerability to crash the server with SIGSEGV causing denial of service for all connected users, or corrupt token sampling probabilities by reading garbage values from memory before the allocated buffer.

CVSS 4.0 · 8.5 High EPSS < 1% KEV · Not listed
Vendors
Ggml Ggml-org
Products
Llama.cpp Llama.cpp
CVE-2026-48435

CAI Content Credentials | Integer Underflow (Wrap or Wraparound) (CWE-191)

CAI Content Credentials is affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-service condition. Exploitation of this issue does not require user interaction.

CVSS 3.1 · 6.2 Medium EPSS < 1% KEV · Not listed
Vendors
Adobe
Products
C2pa C2pa-web C2patool and 3 more
CVE-2026-71389

CAI Content Credentials | Integer Underflow (Wrap or Wraparound) (CWE-191)

CAI Content Credentials is affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-service condition. Exploitation of this issue does not require user interaction.

CVSS 3.1 · 6.2 Medium EPSS < 1% KEV · Not listed
Vendors
Adobe
Products
C2pa C2pa-web C2patool and 3 more
CVE-2026-53130

fs/omfs: reject s_sys_blocksize smaller than OMFS_DIR_START

In the Linux kernel, the following vulnerability has been resolved: fs/omfs: reject s_sys_blocksize smaller than OMFS_DIR_START omfs_fill_super() rejects oversized s_sys_blocksize values (> PAGE_SIZE), but it does not reject values smaller than OMFS_DIR_START (0x1b8 = 440). Later, omfs_make_empty() uses sbi->s_sys_blocksize - OMFS_DIR_START as the length argument to memset(). Since s_sys_blocksize is u32, a crafted filesystem image with s_sys_blocksize < OMFS_DIR_START causes an unsigned underflow there, wrapping to a value near 2^32. That drives a ~4 GiB memset() from bh->b_data + OMFS_DIR_START and overwrites kernel memory far beyond the backing block buffer. Add the corresponding lower-bound check alongside the existing upper-bound check in omfs_fill_super(), so that malformed images are rejected during superblock validation before any filesystem data is processed.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Linux
Products
Linux Kernel
CVE-2019-12678

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SIP Inspection Denial of Service Vulnerability

A vulnerability in the Session Initiation Protocol (SIP) inspection module of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper parsing of SIP messages. An attacker could exploit this vulnerability by sending a malicious SIP packet through an affected device. A successful exploit could allow the attacker to trigger an integer underflow, causing the software to try to read unmapped memory and resulting in a crash.

CVSS 3.1 · 7.5 High EPSS 1.8% KEV · Not listed
Vendors
Cisco
Products
Adaptive Security Appliance Adaptive Security Appliance Software Asa 5505 and 10 more
CVE-2026-51540

Memory Corruption via Integer Underflow in OpENer SendUnitData

OpENer 2.3.0 (master branch up to commit 76b95cf) is vulnerable to a severe memory corruption issue caused by an integer underflow in the processing of connected explicit messages (SendUnitData).

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Eipstackgroup Opener Project
Products
Opener Opener
CVE-2026-71202

raster - Integer Underflow in crop() Offset Handling Causes Capacity-Overflow Panic

The raster Rust crate's crop function (src/editor.rs) clamps the crop width/height against source dimensions but only clamps the offset_x/offset_y parameters against 0, never against the source width/height.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Kosinix
Products
Raster
CVE-2026-54413

iso14229 Integer Underflow and Out-of-Bounds Read in Handle_0x27_SecurityAccess()

driftregion iso14229 through 0.9.0 contains an integer underflow and downstream out-of-bounds read in the Handle_0x27_SecurityAccess function in iso14229.c that allows a remote unauthenticated attacker to crash a UDS server and potentially read memory past the receive buffer by sending a single-byte 0x27 SecurityAccess request that follows any earlier well-formed 0x27 message.

CVSS 4.0 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Driftregion
Products
Iso14229
CVE-2026-24077

Integer Underflow (Wrap or Wraparound) in WLAN Host

Information Disclosure when processing wireless network channel switch information with improperly formatted length fields.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Qualcomm
Products
Aqt1000 Aqt1000 Firmware Ar8035 and 286 more
CVE-2024-57843

virtio-net: fix overflow inside virtnet_rq_alloc

In the Linux kernel, the following vulnerability has been resolved: virtio-net: fix overflow inside virtnet_rq_alloc When the frag just got a page, then may lead to regression on VM. Specially if the sysctl net.core.high_order_alloc_disable value is 1, then the frag always get a page when do refill. Which could see reliable crashes or scp failure (scp a file 100M in size to VM). The issue is that the virtnet_rq_dma takes up 16 bytes at the beginning of a new frag. When the frag size is larger than PAGE_SIZE, everything is fine. However, if the frag is only one page and the total size of the buffer and virtnet_rq_dma is larger than one page, an overflow may occur. The commit f9dac92ba908 ("virtio_ring: enable premapped mode whatever use_dma_api") introduced this problem. And we reverted some commits to fix this in last linux version. Now we try to enable it and fix this bug directly. Here, when the frag size is not enough, we reduce the buffer len to fix this problem.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Linux Redhat
Products
Linux Kernel Enterprise Linux