CVE-2026-102135 json
Kiteworks Email Protection Gateway Deserialization of Untrusted Data
published 2026-09-30 39 d ago modified 2026-10-08 31 d ago also EUVD-2026-90280
- cvss
- 6.6
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 70%
- public exploits
- 0
- none known
Summary
On a Kiteworks Email Protection Gateway cluster with database replication enabled, a party trusted by the cluster could submit a crafted serialized object that was deserialized without sufficient validation, potentially allowing code execution as the gateway service account. Replication is disabled by default, and exploitation requires control of a trusted cluster peer or administrative access to the appliance.
Patch / fix
- Kiteworks Email Protection Gateway 9.5.1
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
cisa vex VA-26-274-01 updated cvss 6.6
Kiteworks multiple vulnerabilities
-
Kiteworks Email Protection Gateway <9.5.1affected: vendor fix kiteworks.com
-
Kiteworks Email Protection Gateway 9.5.1fixed: vendor fix kiteworks.com
From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 38 d ago
Exploit prediction
1.28% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.6 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Kiteworks Email Protection Gateway
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
References
-
github.com
/kiteworks/security-advisories/security/advisories/GHSA-vmwr-r5xq-hp49
vendor-advisory
-
raw.githubusercontent.com
/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json
third-party-advisory, broken-link
Sources
- CVE List CVE-2026-102135
- NVD CVE-2026-102135
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.