The Forged Gatekeeper (CVE-2026-115881): The server downloads the list of revoked certificates and never looks at it, so a cancelled one -- a stolen laptop, a leaked key -- still opens the door.
Card: https://archerships.com/bestiary/2026-b-0004/
All cards: https://archerships.com/bestiary/ https://t.co/qiRNp23cgU
Researchers observed attackers presenting revoked client certificates to bypass mutual-TLS authentication on embedded management interfaces — not because revocation failed to load, but because GoAhead's OpenSSL backend never enforces it (CVE-2026-115881, CVSS 9.1).
Affecting hundreds of millions of routers, industrial controllers, and gateways, this firmware supply-chain flaw leaves remediation velocity entirely in OEM hands.
Runtime egress controls on management plane traffic can help contain post-compromise activity until firmware updates reach affected devices. #CloudSecurity#SupplyChainSecurity
🔗 Full TRC analysis: https://aviatrix.ai/threat-research-center/goahead-tls-flaws-revoked-client-certificates-session-decryption-cve-2026-115881