Vulnerability-Lookup

CVE-2026-33388 (GCVE-0-2026-33388)

Vulnerability from cvelistv5 – Published: 2026-09-08 13:53 – Updated: 2026-10-15 01:18

Title

Incorrect authorization in Credentials Manager in Guardian/CMC before 26.3.0

Summary

An access control vulnerability was discovered in the Credentials Manager functionality due to insufficient validation of user privileges. A remote authenticated user with limited privileges can view a limited subset of the available entries in the Credentials Manager. The actual credential values are not directly visible, but the user can delete entries or edit their properties. An attacker who deletes or edits an entry can disrupt authentication for dependent devices, and one who manipulates an entry's configuration may be able to indirectly obtain the credentials.

Severity

6.4 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:H/SI:L/SA:L

7.4 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:19 UTC

CWE

CWE-863 - Incorrect authorization

Assigner

Nozomi CNA under the mitre root

CNA scorecard B 81/100 over 60 records in the last 180 days details

References

2 references

URL	Tags
https://security.nozominetworks.com/NN-2026:19-01
https://cert-portal.siemens.com/productcert/html/…

Impacted products

3 products

Vendor	Product	Version	CPE status
Nozomi Networks	Guardian	Affected: 0 , < 26.3.0 (semver) cpe:2.3:a:nozomi_networks:guardian::::::::
Nozomi Networks	CMC	Affected: 0 , < 26.3.0 (semver) cpe:2.3:a:nozomi_networks:cmc::::::::
Siemens	RUGGEDCOM APE1808	Affected: 0 , < * (custom)	guessed

Date Public

2026-09-08 07:00

Credits

This issue was found by Elia Battiston of Nozomi Networks during an internal investigation.

Show details on NVD website

JSON

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              "url": "https://security.nozominetworks.com/NN-2026:19-01"
            }
          ],
          "solutions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "Upgrade to v26.3.0 or later.\u003cbr\u003e"
                }
              ],
              "value": "Upgrade to v26.3.0 or later."
            }
          ],
          "source": {
            "discovery": "INTERNAL"
          },
          "title": "Incorrect authorization in Credentials Manager in Guardian/CMC before 26.3.0",
          "workarounds": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "Use internal firewall features to limit access to the web management interface.\u003cbr\u003e"
                }
              ],
              "value": "Use internal firewall features to limit access to the web management interface."
            },
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "Review all accounts with access to it and delete unnecessary ones.\u003cbr\u003e"
                }
              ],
              "value": "Review all accounts with access to it and delete unnecessary ones."
            },
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "Review the existing entries in the Credentials Manager for unauthorized modifications.\u003cbr\u003e"
                }
              ],
              "value": "Review the existing entries in the Credentials Manager for unauthorized modifications."
            }
          ],
          "x_generator": {
            "engine": "Vulnogram 0.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "bec8025f-a851-46e5-b3a3-058e6b0aa23c",
        "assignerShortName": "Nozomi",
        "cveId": "CVE-2026-33388",
        "datePublished": "2026-09-08T13:53:16.999Z",
        "dateReserved": "2026-03-19T11:28:43.172Z",
        "dateUpdated": "2026-09-08T14:19:23.847Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-33388

Vulnerability from fkie_nvd - Published: 2026-09-08 14:17 - Updated: 2026-10-15 02:19

Severity

7.4 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L

Summary

References

	URL	Tags
	prodsec@nozominetworks.com	https://security.nozominetworks.com/NN-2026:19-01
	0b142b55-0307-4c5a-b3c9-f314f3fb7c5e	https://cert-portal.siemens.com/productcert/html/ssa-911336.html

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Guardian",
          "vendor": "Nozomi Networks",
          "versions": [
            {
              "lessThan": "26.3.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "CMC",
          "vendor": "Nozomi Networks",
          "versions": [
            {
              "lessThan": "26.3.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "prodsec@nozominetworks.com"
    },
    {
      "affectedData": [
        {
          "defaultStatus": "unknown",
          "product": "RUGGEDCOM APE1808",
          "vendor": "Siemens",
          "versions": [
            {
              "lessThan": "*",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An access control vulnerability was discovered in the Credentials Manager functionality due to insufficient validation of user privileges. A remote authenticated user with limited privileges can view a limited subset of the available entries in the Credentials Manager. The actual credential values are not directly visible, but the user can delete entries or edit their properties. An attacker who deletes or edits an entry can disrupt authentication for dependent devices, and one who manipulates an entry\u0027s configuration may be able to indirectly obtain the credentials."
    }
  ],
  "id": "CVE-2026-33388",
  "lastModified": "2026-10-15T02:19:21.217",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 7.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 3.7,
        "source": "prodsec@nozominetworks.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 6.4,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "LOW",
          "subConfidentialityImpact": "HIGH",
          "subIntegrityImpact": "LOW",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:H/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "LOW",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "prodsec@nozominetworks.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-33388",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-08T14:19:12.408037Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-08T14:17:22.210",
  "references": [
    {
      "source": "prodsec@nozominetworks.com",
      "url": "https://security.nozominetworks.com/NN-2026:19-01"
    },
    {
      "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-911336.html"
    }
  ],
  "sourceIdentifier": "prodsec@nozominetworks.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ],
      "source": "prodsec@nozominetworks.com",
      "type": "Secondary"
    }
  ]
}

GHSA-6RJW-MCJC-47CH

Vulnerability from github – Published: 2026-09-08 15:31 – Updated: 2026-10-15 03:36

Details

Severity

7.4 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L

6.4 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:H/SI:L/SA:L

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-33388"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-08T14:17:22Z",
    "severity": "MODERATE"
  },
  "details": "An access control vulnerability was discovered in the Credentials Manager functionality due to insufficient validation of user privileges. A remote authenticated user with limited privileges can view a limited subset of the available entries in the Credentials Manager. The actual credential values are not directly visible, but the user can delete entries or edit their properties. An attacker who deletes or edits an entry can disrupt authentication for dependent devices, and one who manipulates an entry\u0027s configuration may be able to indirectly obtain the credentials.",
  "id": "GHSA-6rjw-mcjc-47ch",
  "modified": "2026-10-15T03:36:23Z",
  "published": "2026-09-08T15:31:54Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33388"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-911336.html"
    },
    {
      "type": "WEB",
      "url": "https://security.nozominetworks.com/NN-2026:19-01"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:H/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

ICSA-26-295-18

Vulnerability from csaf_cisa - Published: 2026-10-13 00:00 - Updated: 2026-10-22 06:00

Summary

Siemens RUGGEDCOM APE1808 Devices

Scope

5 vulnerabilities in this advisory, including CVE-2026-33388.

CVE-2026-33388

7.4 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L

Known affected: 1 product

Open the full advisory

NCSC-2026-0415

Vulnerability from csaf_ncscnl - Published: 2026-10-13 09:43 - Updated: 2026-10-13 09:43

Summary

Kwetsbaarheden verholpen in Siemens-producten

Scope

41 vulnerabilities in this advisory, including CVE-2026-33388.

CVE-2026-33388

An access control vulnerability in the Credentials Manager permits a remote authenticated user with limited privileges to view, delete, or modify certain entries, potentially disrupting authentication or indirectly accessing credentials.

7.4 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L

Known affected: 235 products

Open the full advisory

NN-2026:19-01

Vulnerability from csaf_nozominetworks - Published: 2026-09-08 11:00 - Updated: 2026-09-08 11:00

Summary

Incorrect authorization in Credentials Manager in Guardian/CMC before 26.3.0

Severity

High

Scope

1 vulnerability in this advisory, including CVE-2026-33388.

CVE-2026-33388

7.4 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L

Fixed: 2 products Known affected: 2 products

Open the full advisory

SSA-911336

Vulnerability from csaf_siemens - Published: 2026-10-13 00:00 - Updated: 2026-10-13 00:00

Summary

SSA-911336: Multiple Vulnerabilities in Nozomi Guardian/CMC on RUGGEDCOM APE1808 Devices

Scope

5 vulnerabilities in this advisory, including CVE-2026-33388.

CVE-2026-33388

7.4 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L

Known affected: 1 product

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-33388 (GCVE-0-2026-33388)

FKIE_CVE-2026-33388

GHSA-6RJW-MCJC-47CH

ICSA-26-295-18

NCSC-2026-0415

NN-2026:19-01

SSA-911336

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour