Disclosed on August 11, 2026, CVE-2026-62911 lets an attacker with some access replay a captured authentication to elevate privileges on Microsoft Exchange, and a public PoC is already circulating. Nearly 22,000 servers were still exposed at the end of August; if you are on Exchange 2016 without ESU, the fix is not an option — migration is.
Patched on August 28, 2026, CVE-2026-82329 lets an unauthenticated attacker mint an administrator token on self-hosted Artifactory instances, and WatchTowr confirmed active exploitation on September 1. Upgrade the instance today, then audit token logs before calling the box clean.
On August 19, 2026, Cloud Software Group published a bulletin for NetScaler ADC and NetScaler Gateway: CVE-2026-19490, a CVSS 9.3 authentication bypass exploitable remotely without credentials, and CVE-2026-19489, an 8.8 denial-of-service. Any internet-facing appliance needs an emergency upgrade, after triage driven by the SAML or vserver configuration.
On August 11, 2026 Rapid7 published the technical analysis and proof of concept for CVE-2026-55040, a SharePoint authentication bypass patched back in July. By August 13 attackers were already using the PoC against honeypots — here are the four weaknesses in the JWT validation chain and what to do about them.
