Vulnerability-Lookup

GHSA-V5J9-GH53-CFJX

Vulnerability from github – Published: 2026-08-24 21:33 – Updated: 2026-08-24 21:33

Details

Insufficient verification of data authenticity in the IronVNC client in Devolutions Remote Desktop Manager 2026.2.17.0 and earlier, 2026.1.24.0 and earlier, allows an on-path attacker to intercept and tamper with VNC sessions via automatic acceptance of the server's RSA key during RSA-AES authentication.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-78417"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-345"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-24T19:17:04Z",
    "severity": null
  },
  "details": "Insufficient verification of data authenticity in the IronVNC client in Devolutions Remote Desktop Manager 2026.2.17.0 and earlier, 2026.1.24.0 and earlier, allows an on-path attacker to intercept and tamper with VNC sessions via automatic acceptance of the server\u0027s RSA key during RSA-AES authentication.",
  "id": "GHSA-v5j9-gh53-cfjx",
  "modified": "2026-08-24T21:33:43Z",
  "published": "2026-08-24T21:33:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-78417"
    },
    {
      "type": "WEB",
      "url": "https://devolutions.net/security/advisories/DEVO-2026-0029"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-78417 (GCVE-0-2026-78417)

Vulnerability from cvelistv5 – Published: 2026-08-24 18:26 – Updated: 2026-08-24 18:26

Summary

Severity

No CVSS data available.

CWE

CWE-345 - Insufficient Verification of Data Authenticity

Assigner

DEVOLUTIONS mitre root

References

1 reference

URL	Tags
https://devolutions.net/security/advisories/DEVO-…

Impacted products

2 products

Vendor	Product	Version
Devolutions	Remote Desktop Manager	Affected: 0 , < 2026.2.18 (custom)
Devolutions	Remote Desktop Manager	Affected: 0 , < 2026.1.25 (custom)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Remote Desktop Manager",
          "vendor": "Devolutions",
          "versions": [
            {
              "lessThan": "2026.2.18",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Remote Desktop Manager",
          "vendor": "Devolutions",
          "versions": [
            {
              "lessThan": "2026.1.25",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Insufficient verification of data authenticity in the IronVNC client in Devolutions Remote Desktop Manager 2026.2.17.0 and earlier, 2026.1.24.0 and earlier, allows an on-path attacker to intercept and tamper with VNC sessions via automatic acceptance of the server\u0027s RSA key during RSA-AES authentication."
            }
          ],
          "value": "Insufficient verification of data authenticity in the IronVNC client in Devolutions Remote Desktop Manager 2026.2.17.0 and earlier, 2026.1.24.0 and earlier, allows an on-path attacker to intercept and tamper with VNC sessions via automatic acceptance of the server\u0027s RSA key during RSA-AES authentication."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-345",
              "description": "CWE-345 Insufficient Verification of Data Authenticity",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-24T18:26:25.739Z",
        "orgId": "bfee16bd-18e6-446c-9a65-f5b2e3d89c23",
        "shortName": "DEVOLUTIONS"
      },
      "references": [
        {
          "url": "https://devolutions.net/security/advisories/DEVO-2026-0029/"
        }
      ],
      "source": {
        "advisory": "https://devolutions.net/security/advisories/DEVO-2026-0029/",
        "discovery": "UNKNOWN"
      },
      "x_generator": {
        "engine": "Vulnogram 1.0.2"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "bfee16bd-18e6-446c-9a65-f5b2e3d89c23",
    "assignerShortName": "DEVOLUTIONS",
    "cveId": "CVE-2026-78417",
    "datePublished": "2026-08-24T18:26:25.739Z",
    "dateReserved": "2026-08-24T15:10:53.447Z",
    "dateUpdated": "2026-08-24T18:26:25.739Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

GHSA-V5J9-GH53-CFJX

CVE-2026-78417 (GCVE-0-2026-78417)

Tags

Sightings

Nomenclature