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Product
Threat intelligence API
Get started
Live feed
Recipes
Free feeds
CLI & agents
The data
Incident records
Dark web
Validated IOCs
Vulnerabilities
Entity graph
For teams
For service providers
Use cases
About ThreatCluster
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OpenAPI (Swagger)
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Examples on GitHub
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HollowByte
Vulnerability
Threat entity extracted from intelligence sources
Sep 6: 0 mentions
Sep 7: 0 mentions
Sep 8: 2 mentions
Sep 9: 0 mentions
Sep 10: 0 mentions
Sep 11: 0 mentions
Sep 12: 0 mentions
Sep 6
Sep 9
Sep 12
Entities
›
vulnerability
›
HollowByte
Frequency
8
occurrences
First Seen
July 17, 2026
Last Seen
September 8, 2026
API
Overview
Recent Events
Profile
Profile
MITRE ATT&CK
1 / 2
Tools Used
Openssl
Python
Nginx
Node.js
Related CVEs
CVE-2026-63072
MITRE Techniques
T1499 - Endpoint Denial of Service
Affected Platforms
Linux
Apache
MySQL
PHP
PostgreSQL
Ruby
-
REC
Recon
No techniques detected
-
RD
Resource Dev
No techniques detected
-
IA
Initial Access
No techniques detected
-
EX
Execution
No techniques detected
-
PE
Persistence
No techniques detected
-
PE
Priv Esc
No techniques detected
-
DE
Defense Evasion
No techniques detected
-
CA
Cred Access
No techniques detected
-
DI
Discovery
No techniques detected
-
LM
Lateral Mov
No techniques detected
-
CO
Collection
No techniques detected
-
C2
C2
No techniques detected
-
EX
Exfil
No techniques detected
-
IM
Impact
No techniques detected
1
techniques detected across
0
tactics
Related Clusters (2)
Critical OpenSSL Vulnerabilities Affecting openSUSE and SUSE snphost
Aug 31
·
16 sources
65
HollowByte Vulnerability in OpenSSL Allows DoS with 11-Byte Payload
Jul 17
·
10 sources
58
Related Articles (8)
SUSE openssl-1_1-livepatches Important DoS Heap Overflow Patch 2026-4036
Linuxsecurity
·
4d ago
SUSE openssl-1_1-livepatches Important DoS Buffer Overflow Fix 2026-4042
Linuxsecurity
·
4d ago
Okta explains
sec.okta.com
·
Jul 19
OpenSSL Fixes HollowByte Memory Exhaustion Bug
Securityaffairs.Co
·
Jul 18
OpenSSL DoS Vulnerability Lets Remote Attackers Exhaust Server Memory With an 11
Gbhackers
·
Jul 18
HollowByte DDoS flaw bloats OpenSSL server memory with 11
Bleepingcomputer
·
Jul 18
HollowByte flaw allows unauthenticated OpenSSL memory exhaustion
Feeds.4Sysops
·
Jul 17
OpenSSL “HollowByte” Vulnerability Lets Hackers Crash Servers With Just 11 Bytes
Cybersecuritynews
·
Jul 17
Prev
1 / 2
Next
Related Entities
DDoS
Denial of Service
Okta
CVE-2026-63072
Cwe-122 - Heap-based Buffer Overflow
Cwe-400 - Uncontrolled Resource Consumption
T1499 - Endpoint Denial of Service
Linux
Apache
MySQL
PHP
PostgreSQL
