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CVE-2026-31982

Last refreshed2026-10-07

Status: UPDATED  |  Advisory ID: CVE-2026-31982

Key Details

CVECVE-2026-31982
CVSS Score / Version7.1 (High) / CVSS v3.1
Updated2026-08-11
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
CVSS Proseattack vector is network; attack complexity is low; privileges required is none; user interaction is required; scope is changed; confidentiality impact is low; integrity impact is low; availability impact is low.
Affected productsNozomi Networks Guardian, Nozomi Networks CMC, and Siemens RUGGEDCOM APE1808
Classified asCWE-601 (URL Redirection to Untrusted Site ('Open Redirect'))
Exploitation prediction (EPSS)0.31% probability of exploitation in the next 30 days (22% percentile) -- FIRST.org's EPSS model.

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
Nozomi NetworksGuardian
Nozomi NetworksCMC
SiemensRUGGEDCOM APE1808
SubsystemsGeneral OT
SectorsMultiple

What to Know

An Open Redirect vulnerability was discovered in the SAML Single Sign-On functionality due to insufficient validation of a user-controlled redirection parameter. An unauthenticated attacker can craft a request to the SAML sign-in endpoint and poison the cached SAML redirection for other users who subsequently initiate SAML Single Sign-On, enabling phishing and credential-theft attacks, as well as disrupting SAML authentication for all affected users. (NVD)

What to Do

Monitor Nozomi Networks's and Siemens's web pages for any future patch releases. See vendor advisory link below.

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-31982
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-31982
Vendor advisoryhttps://security.nozominetworks.com/NN-2026:9-01