CISA Urges Patching Critical Vulnerability in BeyondTrust Remote Support
CISA warns of critical BeyondTrust Remote Support vulnerability CVE-2026-102764, urging immediate patching.
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Summary
CISA has identified a critical authentication bypass vulnerability, CVE-2026-102764, affecting BeyondTrust Remote Support versions prior to 26.2.3. Threat actors are actively exploiting this flaw for initial access, persistence, privilege escalation, and lateral movement. CISA has added it to its Known Exploited Vulnerabilities catalog and urges organizations with self-hosted appliances to apply the BT26-05-RS patch immediately, or upgrade if on an older version.
The lesson from this incident
Full lessonA critical authentication bypass vulnerability (CVE-2026-102764) in BeyondTrust Remote Support is being actively exploited, allowing threat actors to gain initial access, escalate privileges, and move laterally across networks. Remote support tools are high-value targets because they operate with elevated permissions and broad network access by design, making a successful exploit especially damaging. CISA's addition to the Known Exploited Vulnerabilities (KEV) catalog signals confirmed, real-world exploitation — not just theoretical risk. Organizations running self-hosted appliances that delay patching are directly exposed to full network compromise. This incident underscores that privileged remote access tools demand the highest priority in patch cycles.
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Indicators of Compromise
- cve — CVE-2026-102764