Skip to content
Critical Dogtag PKI Vulnerability in Ubuntu Allows Unauthorized Certificate Renewal

Critical Dogtag PKI Vulnerability in Ubuntu Allows Unauthorized Certificate Renewal

First seen 9 Apr 2026, 03:33 UTC • •

Article Content

Browse articles
ThreatCluster AI
ThreatCluster •April 10, 2026 at 01:48 UTC
  • •Dogtag PKI vulnerability allows unauthorized certificate renewal.
  • •Affected systems include Ubuntu 20.04 LTS and 18.04 LTS.
  • •Immediate system updates are required to mitigate the risk.

A critical security vulnerability has been identified in Dogtag PKI affecting Ubuntu 20.04 LTS and 18.04 LTS. Discovered by Fraser Tweedale and Geetika Kapoor, this flaw allows attackers to renew compromised certificates without proper authentication. This unauthorized renewal could lead to persistent access to network resources by malicious actors. The vulnerability impacts systems using Dogtag PKI, an enterprise-class Certificate Authority. Users are advised to update their systems to the latest package versions to mitigate the risk. The vulnerability is categorized under USN-8158, and Ubuntu Pro users can access the necessary updates. A standard system update is recommended to address this issue. The situation is critical, and immediate action is advised to prevent potential exploitation.

Start a free Starter trial for enhanced analysis

Ask AI about this cluster

Updated 189d ago How this analysis works

Timeline

2021-03-15
CVE-2021-20179 published
2026-04-08
Ubuntu releases advisory USN-8158 for Dogtag PKI vulnerability.
Recent
Users advised to update systems to patch the vulnerability.

More articles in this cluster (2)

Following this threat?

Track CVE-2021-20179 in your own feed — you're alerted when they show up in new reporting, leak sites or exploitation.

Free account · no card needed