Signal
Critical vulnerabilities fixed in CryptX affecting Ubuntu 18.04 LTS
Evidence first: scan the strongest sources, then decide whether to go deeper.
Published 2026-03-26 15:54 UTCUpdated 2026-03-26 23:33 UTC
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cvesecurity_advisoryubuntucryptographyvulnerabilitypatch
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Evidence trail (top sources)
top sources (2 domains)domains are deduped. counts indicate coverage, not truth.2 top sources shown
limited source diversity in top sources
Overview
Multiple severe security flaws were addressed in CryptX, a cryptographic library used in Ubuntu 18.04 LTS.
Entities
UbuntuCryptX
Score total
0.87
Momentum 24h
2
Posts
2
Origins
2
Source types
1
Duplicate ratio
0%
Why now
- Patches were released on 26 March 2026 to address these critical issues.
- The vulnerabilities affect a widely used cryptographic library in a long-term supported OS version.
- Prompt updates are essential to mitigate potential attacks exploiting these flaws.
Why it matters
- CryptX vulnerabilities can lead to data integrity violations and authentication bypass.
- High severity CVEs with CVSS up to 9.8 indicate critical risk to affected systems.
- Ubuntu 18.04 LTS users must patch to prevent exploitation of these flaws.
LLM analysis
Topic mix: lowPromo risk: lowSource quality: high
Recurring claims
- CryptX did not verify authentication tags during GCM and ChaCha20-Poly1305 decryption, allowing possible authentication bypass.
- CryptX included a vulnerable version of the tomcrypt library susceptible to malformed Unicode handling.
- CryptX included a vulnerable version of the libtommath library with an integer overflow leading to memory corruption or denial of service.
How sources frame it
- Ubuntu Security Notices: neutral
This briefing consolidates critical CryptX vulnerabilities affecting Ubuntu 18.04 LTS with high severity CVEs, emphasizing the importance of timely patching to maintain system security.
All evidence
All evidence
CryptX: CVSS (Max): 9.8
AusCERT - Bulletins · portal.auscert.org.au · 2026-03-26 23:33 UTC
USN-8128-1: CryptX vulnerabilities
Ubuntu Security Notices · ubuntu.com · 2026-03-26 15:54 UTC
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Top publishers (this list)
- AusCERT - Bulletins (1)
- Ubuntu Security Notices (1)
Top origin domains (this list)
- portal.auscert.org.au (1)
- ubuntu.com (1)