9.8

CVE-2025-26846: znuny Missing Authorization

CVSS: 9.8v3.1CriticalAnalyzed
AliasesUBUNTU-CVE-2025-26846DEBIAN-CVE-2025-26846
Published 12-05-2025Last modified 12-05-2025
Open JSON

Vulnerability summary

CVE-2025-26846 is a critical (CVSS 9.8) Missing Authorization vulnerability in znuny. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 36.2% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.43%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 12-05-2025
    PublishedVulnerability first disclosed.
  2. 12-05-2025
    Last modifiedVulnerability information updated.

Description

An issue was discovered in Znuny before 7.1.4. Permissions are not checked properly when using the Generic Interface to update ticket metadata.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.43%

Chance of exploitation in the next 30 days

Percentile

36%

Versus all other CVEs

30-day change

+0.02 pp

From 0.41% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.43%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • znunyAll versions (No fix recorded) | < 6.5.13-1
Ubuntu1 product
  • znunyAll versions (No fix recorded)
Znuny1 product
  • znuny≥ 6.0.0, ≤ 6.0.48 | ≥ 6.5.1, ≤ 6.5.11 | ≥ 7.0.1, ≤ 7.1.3

3 vendors · 3 products

References

5 links