Vulnerability-Lookup

CVE-2026-90869 (GCVE-0-2026-90869)

Vulnerability from cvelistv5 – Published: 2026-10-29 15:54 – Updated: 2026-10-30 17:14

Title

Pre-Authentication SSH Denial of Service via Malformed Public-Key Signature in Progress WS_FTP Server

Summary

A remote attacker who knows a valid account's enrolled SSH public key can terminate the shared SSH service in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-30 17:14 UTC

CWE

CWE-125 - Out-of-bounds Read
CWE-20 - Improper Input Validation

Assigner

ProgressSoftware CNA under the mitre root

CNA scorecard B 78/100 over 160 records in the last 180 days details

References

1 reference

URL	Tags
https://progress.lightning.force.com/lightning/r/…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
Progress Software	WS_FTP Server	Affected: 0 , < 2024.0.7 (custom) Affected: 0 , < 2025.0.4 (custom)	guessed

Credits

Niv Levy (restricted)

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-90869

Vulnerability from fkie_nvd - Published: 2026-10-29 16:20 - Updated: 2026-10-29 16:24

Severity

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

Summary

A remote attacker who knows a valid account's enrolled SSH public key can terminate the shared SSH service in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows.

References

	URL	Tags
	security@progress.com	https://progress.lightning.force.com/lightning/r/Knowledge__kav/ka7Pb000001vl86IAA/view

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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          "defaultStatus": "unaffected",
          "platforms": [
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          ],
          "product": "WS_FTP Server",
          "vendor": "Progress Software",
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  "id": "CVE-2026-90869",
  "lastModified": "2026-10-29T16:24:53.840",
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GHSA-47X4-GRC2-RH4M

Vulnerability from github – Published: 2026-10-29 18:31 – Updated: 2026-10-29 18:31

Details

A remote attacker who knows a valid account's enrolled SSH public key can terminate the shared SSH service in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows.

Severity

7.5 (High)


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

Show details on source website

JSON

To clipboard

{
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    "CVE-2026-90869"
  ],
  "database_specific": {
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      "CWE-20"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
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    "severity": "HIGH"
  },
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  "id": "GHSA-47x4-grc2-rh4m",
  "modified": "2026-10-29T18:31:07Z",
  "published": "2026-10-29T18:31:07Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90869"
    },
    {
      "type": "WEB",
      "url": "https://progress.lightning.force.com/lightning/r/Knowledge__kav/ka7Pb000001vl86IAA/view"
    }
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  "schema_version": "1.4.0",
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      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

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

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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.
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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.

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CVE-2026-90869 (GCVE-0-2026-90869)

FKIE_CVE-2026-90869

GHSA-47X4-GRC2-RH4M

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour