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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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ReDoc
Examples on GitHub
Quickstart & plans
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Back
HollowByte
Vulnerability
Threat entity extracted from intelligence sources
Entities
›
vulnerability
›
HollowByte
Frequency
9
occurrences
First Seen
July 17, 2026
Last Seen
September 30, 2026
API
Overview
Recent Events
Profile
Profile
MITRE ATT&CK
1 / 2
Tools Used
Openssl
Nginx
Node.js
Python
Related CVEs
CVE-2026-63072
CVE-2026-87902
CVE-2026-88771
CVE-2026-88772
CVE-2026-89102
CVE-2026-89136
CVE-2026-93302
CVE-2026-28324
MITRE Techniques
T1499 - Endpoint Denial of Service
T1190 - Exploit Public-Facing Application
Campaigns
PeopleSoft Campaign
Affected Platforms
Linux
PostgreSQL
Ruby
Apache
MySQL
PHP
-
REC
Recon
No techniques detected
-
RD
Resource Dev
No techniques detected
1
IA
Initial Access
T1190 - Exploit Public-Facing Application
-
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
2
techniques detected across
1
tactics
Related Clusters (2)
Critical OpenSSL Vulnerabilities Affecting openSUSE and SUSE snphost
Aug 31
·
18 sources
65
HollowByte Vulnerability in OpenSSL Allows DoS with 11-Byte Payload
Jul 17
·
7 sources
58
Related Articles (9)
High-Severity Vulnerabilities Patched in OpenSSL, WolfSSL
Securityweek
·
Sep 30
SUSE openssl-1_1-livepatches Important DoS Heap Overflow Patch 2026-4036
Linuxsecurity
·
Sep 8
SUSE openssl-1_1-livepatches Important DoS Buffer Overflow Fix 2026-4042
Linuxsecurity
·
Sep 8
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
Sql Injection
PeopleSoft Campaign
Citrix
Kiteworks
Microsoft
Okta
Salesforce
SolarWinds
CVE-2026-63072
CVE-2026-87902
