JLSEC-2026-686 Integer Underflow Leads to Out-of-Bounds Access in XChaCha20-Poly1305 Decrypt

Integer Underflow Leads to Out-of-Bounds Access in XChaCha20-Poly1305 Decrypt. This issue is hit specifically with a call to the function wcXChaCha20Poly1305Decrypt which is not used with TLS connections, only from direct calls from an application...

JLSEC-2026-752 Integer underflow in `wc_PKCS7_DecryptOri` when handling crafted Other Recipient Info, leading to...

Integer underflow in wcPKCS7DecryptOri when handling crafted Other Recipient Info, leading to incorrect length handling during decryption...

JLSEC-2026-715 An integer underflow issue exists in wolfSSL when parsing the Subject Alternative Name (SAN)...

An integer underflow issue exists in wolfSSL when parsing the Subject Alternative Name SAN extension of X.509 certificates. A malformed certificate can specify an entry length larger than the enclosing sequence, causing the internal length counter to wrap during parsing. This results in incorrect...

JLSEC-2026-692 Integer underflow in wolfSSL packet sniffer <= 5.8.4 allows an attacker to cause a buffer overflow...

Integer underflow in wolfSSL packet sniffer = 5.8.4 allows an attacker to cause a buffer overflow in the AEAD decryption path by injecting a TLS record shorter than the explicit IV plus authentication tag into traffic inspected by sslDecodePacket. The underflow wraps a 16-bit length to a large...

CVE-2026-48296

CVE-2026-48296 concerns CAI Content Credentials and describes an Integer Underflow (Wrap or Wraparound) (CWE-191) that could cause an application to crash and enter a denial‑of‑service condition. Exploitation is characterized as local with no required user interaction (per CVSS 3.1 metrics: AV:L/...

CVE-2026-48296

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...

CVE-2026-48298

CVE-2026-48298 affects CAI Content Credentials. The vulnerability is an Integer Underflow (Wrap or Wraparound) in CAI Content Credentials that can cause an application denial-of-service by crashing the process. Exploitation does not require user interaction and is described with a LOCAL attack ve...

CVE-2026-48298

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...

EUVD-2026-44015

Integer underflow wrap or wraparound in Reliable Multicast Transport Driver RMCAST allows an unauthorized attacker to execute code over an adjacent network...

CVE-2026-55039

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

CVE-2026-55011

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

CVE-2026-54982

Integer underflow wrap or wraparound in Reliable Multicast Transport Driver RMCAST allows an unauthorized attacker to execute code over an adjacent network...

CVE-2026-50308

Integer underflow wrap or wraparound in Windows NTFS allows an unauthorized attacker to execute code locally...

CVE-2026-50300

Integer underflow wrap or wraparound in Windows Kernel allows an authorized attacker to disclose information locally...

CVE-2026-49181

Integer underflow wrap or wraparound in Windows DHCP Client allows an unauthorized attacker to elevate privileges over a network...

CVE-2026-50300

CVE-2026-50300 is an integer underflow in Windows Kernel (and related Windows components such as DWM Core Library per CVE listings) that enables an authorized local attacker to disclose information. The entry specifies a local attack vector with low privileges and no user interaction, causing a c...

CVE-2026-50308

CVE-2026-50308 is a Windows NTFS vulnerability described as an integer underflow (wrap or wraparound) that could allow an unauthorized attacker to execute code locally. Sources consistently state: affected component is Windows NTFS on Windows systems; impact is local code execution with high seve...

CVE-2026-49181

CVE-2026-49181 is a Windows DHCP Client vulnerability described as an integer underflow (wrap or wraparound) that allows an unauthenticated attacker to elevate privileges over a network. The CVE is corroborated by multiple sources in Connected documents, including NVD and MSRC updates, and ENISA/...

CVE-2026-55011

CVE-2026-55011 : The vulnerability is a local code execution in Microsoft Defender caused by an integer underflow (wrap/wraparound), allowing an unauthorized attacker to run code on the affected system. The available documents consistently describe a local-execution impact from this underflow; no...

CVE-2026-54982

CVE-2026-54982 affects the Windows Reliable Multicast Transport Driver (RMCAST). The issue is an integer underflow in RMCAST that can allow an adjacent-network attacker to execute code on the vulnerable host (remote code execution). CVSS v3.1 indicates high impact with adjacent network exploitati...