An issue was discovered in Znuny through 7.1.3.

published 2025-05-08 last yr. modified 2026-06-17 4mo ago also EUVD-2025-14011

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 30%
public exploits: 0; none known

An issue was discovered in Znuny through 7.1.3. If access to a ticket is not given, the content of S/MIME encrypted e-mail messages is visible to users with access to the CommunicationLog.

Patch / fix

distros 1

znuny Debian 14, Debian 13 6.5.13-1

debian advisories DEBIAN-CVE-2025-26842

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CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: last yr. (2025-05-08)

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Classification

Weakness

CWE-863 Incorrect Authorization

References

znuny.org /en/advisories/zsa-2025-01
vendor-advisory

Sources

CVE List CVE-2025-26842
NVD CVE-2025-26842

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