CVE-2026-6678
Integer underflow in wc_PKCS7_DecryptOri when handling crafted Other Recipient Info, leading to incorrect length handling during decryption.
CVSS
5.3
Medium
EPSS
0.3%
p26
KEV
—
Exploit Today
8
0-100
Published: Jun 25, 2026 · Last modified: Jul 1, 2026 · CWE-191
0.2%EPSS · 30 days0.3%
2026-08-172026-09-14
Integer underflow in wc_PKCS7_DecryptOri when handling crafted Other Recipient Info, leading to incorrect length handling during decryption.
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2026-909964.0 MED—
——0A flaw was found in sssd. A local unprivileged user could send a specially crafted request with a zero-length body to the Network Security Services (NSS) responder. This could lead to a denial-of-service condition, causing the NSS responder to become unstable or terminate. This vulnerability affects the availability of the system responder.1dCVE-2026-13326—4.8%
——1An out-of-bounds read in Qt NFC's language code length parsing allows a physically proximate attacker to cause a denial of service or limited memory disclosure via a crafted NFC tag.4dCVE-2026-819775.5 MED6.9%
——2Acrobat Reader is affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to disclose sensitive information. Exploitation of this issue requires user interaction in that a victim must open a malicious file.4dCVE-2026-663077.5 HIG49.0%
——15Integer underflow (wrap or wraparound) in Skype for Business allows an unauthorized attacker to deny service over a network.7dCVE-2026-784536.5 MED58.4%
——18Integer underflow (wrap or wraparound) in Microsoft Windows SCSI Class System File allows an unauthorized attacker to disclose information over a network.4dCVE-2026-774885.5 MED23.1%
——7Integer underflow (wrap or wraparound) in SQL Server allows an authorized attacker to disclose information locally.5h