HollowByte is a vulnerability tracked by ThreatCluster, appearing in 1 threat cluster built from 6 intelligence report mentions.
HollowByte is a vulnerability tracked across 1 threat cluster and 6 intelligence report mentions on ThreatCluster. First observed July 17, 2026; most recent activity July 19, 2026.
The HollowByte vulnerability in OpenSSL enables unauthenticated attackers to trigger a denial-of-service (DoS) condition using a malicious payload of just 11 bytes. Discovered by Okta's Red Team, this flaw exploits how…
HollowByte is a vulnerability tracked by ThreatCluster, appearing in 1 threat cluster built from 6 intelligence report mentions.
The most recent intelligence report mentioning HollowByte on ThreatCluster is dated July 19, 2026. Activity was first observed July 17, 2026, giving a tracked span from then to July 19, 2026.
Across ThreatCluster reporting, HollowByte most frequently co-occurs with DDoS, Denial of Service, Okta, Cwe-400 - Uncontrolled Resource Consumption, T1499 - Endpoint Denial of Service, among 12 tracked related entities.
The most significant recent cluster is “HollowByte Vulnerability in OpenSSL Allows DoS with 11-Byte Payload” (8 articles · Updated July 17, 2026). HollowByte appears across 1 threat cluster in total, listed above with sources.
HollowByte appears in 6 intelligence report mentions across 1 deduplicated threat cluster, aggregated from 17,000+ monitored sources.