Kiteworks Email Protection Gateway has an Insufficient Session Expiration

published 2026-03-25 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-15807

cvss: 4.9; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 16%
public exploits: 0; none known

Kiteworks is a private data network (PDN). Prior to version 9.2.1, a vulnerability in Kiteworks Email Protection Gateway session management allows blocked users to maintain active sessions after their account is disabled. This could allow unauthorized access to continue until the session naturally expires. Upgrade Kiteworks to version 9.2.1 or later to receive a patch.

Patch / fix

fixed in 1

accellion kiteworks 9.2.1

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 7 mo ago (2026-03-25)

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	4.9	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

kiteworks Kiteworks Email Protection Gateway

Classification

Weakness

CWE-613 DEPRECATED: Insufficient Session Expiration

References

github.com /kiteworks/security-advisories/security/advisories/GHSA-92w7-fpjr-wpxc
vendor-advisory

Sources

CVE List CVE-2026-29092
NVD CVE-2026-29092

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary