Skip to main content
No exploitation reportedFix available

CVE-2021-34825

No exploitation reported by the sources we read.

  • Published2021-06-17
  • WeaknessCWE-319

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Quassel through 0.13.1, when --require-ssl is enabled, launches without SSL or TLS support if a usable X.509 certificate is not found on the local system.

Timeline

dates in UTC
  1. 2021-06-1714:15CVE publishedNVD

Versions per branch

NVD
Fedoraproject fedora
BranchAffectedFixed in
33.x= 33no fix published
34.x= 34no fix published
Quassel-irc quassel
BranchAffectedFixed in
0.13≤ 0.13.1no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • quasselUbuntu:26.10all versions · no fixed version listed
  • quasselUbuntu:26.04:LTSall versions · no fixed version listed
  • quasselUbuntu:25.10all versions · no fixed version listed
  • quasselUbuntu:24.04:LTSall versions · no fixed version listed
  • quasselUbuntu:22.04:LTSall versions · no fixed version listed
  • quasselUbuntu:20.04:LTSall versions · no fixed version listed
  • quasselUbuntu:18.04:LTSall versions · no fixed version listed
  • quasselUbuntu:16.04:LTSall versions · no fixed version listed

16 more package ranges on OSV.dev

Vendor advisories

  • CVE-2021-34825 Red Hat Product Security

    quassel: when --require-ssl is enabled and there is no certificate to load it will accept plaintext connections

Full record on NVD

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2021-06-17
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-gqwq-mfx3-p24m

Frequently asked questions

What is CVE-2021-34825?

Quassel through 0.13.1, when --require-ssl is enabled, launches without SSL or TLS support if a usable X.509 certificate is not found on the local system.

Is CVE-2021-34825 actively exploited?

Active exploitation of CVE-2021-34825 has not been confirmed. Its EPSS score was 0.6% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-34825?

CVE-2021-34825 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Running quassel? Hear about its next vulnerability

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this productCISA KEV additions, November 2026Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database

Sources for this record