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CVE WatchJul 15, 2026

CVE-2026-32203

Stack-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to deny service over a network.

CVSS

7.5

High

EPSS

1.6%

p72

KEV

—

Exploit Today

22

0-100

Published: Apr 14, 2026 · Last modified: Jul 15, 2026 · CWE-20 · CWE-121 · CWE-787

EPSS · 30d

1.6%EPSS · 30 days1.6%

2026-06-302026-07-16

Technical description

Stack-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to deny service over a network.

Official references

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

CVE-2026-341978.8 HIG

KEV—80Apache ActiveMQ Improper Input Validation Vulnerability2d CVE-2026-125699.8 CRI

KEV—70PTC Windchill and FlexPLM Improper Input Validation Vulnerability16d CVE-2026-435007.8 HIG

——30In the Linux kernel, the following vulnerability has been resolved: rxrpc: Also unshare DATA/RESPONSE packets when paged frags are present The DATA-packet handler in rxrpc_input_call_event() and the RESPONSE handler in rxrpc_verify_response() copy the skb to a linear one before calling into the security ops only when skb_cloned() is true. An skb that is not cloned but still carries externally-owned paged fragments (e.g. SKBFL_SHARED_FRAG set by splice() into a UDP socket via __ip_append_data, or a chained skb_has_frag_list()) falls through to the in-place decryption path, which binds the frag pages directly into the AEAD/skcipher SGL via skb_to_sgvec(). Extend the gate to also unshare when skb_has_frag_list() or skb_has_shared_frag() is true. This catches the splice-loopback vector and other externally-shared frag sources while preserving the zero-copy fast path for skbs whose frags are kernel-private (e.g. NIC page_pool RX, GRO). The OOM/trace handling already in place is reused.2d CVE-2018-250327.5 HIG

——30zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if the input has many distant matches.3d CVE-2025-154678.8 HIG

——30Issue summary: Parsing CMS AuthEnvelopedData or EnvelopedData message with maliciously crafted AEAD parameters can trigger a stack buffer overflow. Impact summary: A stack buffer overflow may lead to a crash, causing Denial of Service, or potentially remote code execution. When parsing CMS (Auth)EnvelopedData structures that use AEAD ciphers such as AES-GCM, the IV (Initialization Vector) encoded in the ASN.1 parameters is copied into a fixed-size stack buffer without verifying that its length fits the destination. An attacker can supply a crafted CMS message with an oversized IV, causing a stack-based out-of-bounds write before any authentication or tag verification occurs. Applications and services that parse untrusted CMS or PKCS#7 content using AEAD ciphers (e.g., S/MIME (Auth)EnvelopedData with AES-GCM) are vulnerable. Because the overflow occurs prior to authentication, no valid key material is required to trigger it. While exploitability to remote code execution depends on platform and toolchain mitigations, the stack-based write primitive represents a severe risk. The FIPS modules in 3.6, 3.5, 3.4, 3.3 and 3.0 are not affected by this issue, as the CMS implementation is outside the OpenSSL FIPS module boundary. OpenSSL 3.6, 3.5, 3.4, 3.3 and 3.0 are vulnerable to this issue. OpenSSL 1.1.1 and 1.0.2 are not affected by this issue.2d CVE-2025-607877.2 HIG

——29MotionEye v0.43.1b4 and before is vulnerable to OS Command Injection in configuration parameters such as image_file_name. Unsanitized user input is written to Motion configuration files, allowing remote authenticated attackers with admin access to achieve code execution when Motion is restarted.12d