CVE-2026-66154
insufficient certificate validation in a privileged communication workflow, was identified in a GMS application 9.5.1 (Build 9510.1044) and earlier versions which, under a successful MitM attack and controlled network conditions, could permit unauthorized changes
CVE-2026-66154: insufficient certificate validation in a privileged communication workflow, was identified in a GMS application 9.5.1 (Build 9510.1044) and…
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
CVE-2026-66154 at a glance
- CISA KEV
- Not listed (catalog checked )
- Highest advisory severity
- Critical
- Vendor advisories
- 2 from SonicWall
- VulniPulse record
- Published · Updated
Is CVE-2026-66154 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2026-66154 is not in the CISA KEV catalog (checked ) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.
How do I fix CVE-2026-66154?
The tracked advisories that cover only this CVE do not list a fixed release yet. That does not mean no fix exists; check each vendor source below.
Vendor advisory comparison
SonicWall
2 advisories- Advisory severityCritical9.4
Critical [CVE-2026-66145 +5] GMS: unauthenticated remote code execution vulnerability was identified in GMS 9.5.1 (Build 9510.1044) and earlier versions which…
SNWLID-2026-0011Source published Source updated
This bulletin covers 6 CVEs. The products, versions, score and guidance below describe the bulletin; check its source for applicability to this specific CVE.
An unauthenticated remote code execution vulnerability was identified in GMS 9.5.1 (Build 9510.1044) and earlier versions which allows remote attacker to read sensitive data and perform arbitrary file write via zipslip.
- Related products — impact not confirmed
- GMS
- Source-reported affected versions
- 9.5.1
- Source-reported fixed versions
- No fixed-version detail extracted. This does not mean no fix exists.
- Mitigation guidance
- No mitigation guidance extracted; consult the source.
- Advisory severityUnrated
Advisory [CVE-2026-66154] insufficient certificate validation in a privileged communication workflow, was identified in a GMS application 9.5.1 (Build 9510.1044) and earlier versions which, under a successful MitM attack and controlled network conditions, could permit unauthorized changes
CVE-2026-66154Source published Source updated
An insufficient certificate validation in a privileged communication workflow, was identified in a GMS application 9.5.1 (Build 9510.1044) and earlier versions which, under a successful MitM attack and controlled network conditions, could permit unauthorized changes.
- Affected products in this advisory
- GMS
- Source-reported affected versions
- GMS 9.5.1 and earlier versions
- Source-reported fixed versions
- No fixed-version detail extracted. This does not mean no fix exists.
- Mitigation guidance
- No mitigation guidance extracted; consult the source.
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