Vulnerability-Lookup

GHSA-QHM2-FWJ3-3R79

Vulnerability from github – Published: 2026-04-15 00:31 – Updated: 2026-04-23 18:32

Details

Unisys WebPerfect Image Suite versions 3.0.3960.22810 and 3.0.3960.22604 expose a deprecated .NET Remoting TCP channel that allows remote unauthenticated attackers to leak NTLMv2 machine-account hashes by supplying a Windows UNC path as a target file argument through object-unmarshalling techniques. Attackers can capture the leaked NTLMv2 hash and relay it to other hosts to achieve privilege escalation or lateral movement depending on network configuration and patch level.

Severity ?

7.0 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-39906"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-441"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-14T22:16:32Z",
    "severity": "HIGH"
  },
  "details": "Unisys WebPerfect Image Suite versions 3.0.3960.22810 and 3.0.3960.22604 expose a deprecated .NET Remoting TCP channel that allows remote unauthenticated attackers to leak NTLMv2 machine-account hashes by supplying a Windows UNC path as a target file argument through object-unmarshalling techniques. Attackers can capture the leaked NTLMv2 hash and relay it to other hosts to achieve privilege escalation or lateral movement depending on network configuration and patch level.",
  "id": "GHSA-qhm2-fwj3-3r79",
  "modified": "2026-04-23T18:32:55Z",
  "published": "2026-04-15T00:31:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39906"
    },
    {
      "type": "WEB",
      "url": "https://gist.github.com/VAMorales/be3e4ed472c51794493c1256cce16129"
    },
    {
      "type": "WEB",
      "url": "https://www.unisys.com/solutions/cai/applications"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/unisys-webperfect-image-suite-ntlmv2-hash-leakage-via-net-remoting"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:N/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"
    }
  ]
}

CVE-2026-39906 (GCVE-0-2026-39906)

Vulnerability from cvelistv5 – Published: 2026-04-14 21:21 – Updated: 2026-04-23 14:38

Title

Unisys WebPerfect Image Suite 3.0 NTLMv2 Hash Leakage via .NET Remoting

Summary

Severity ?

7 (High)


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

CWE

CWE-441 - Unintended Proxy or Intermediary ('Confused Deputy')

Assigner

VulnCheck

References

URL

Tags

	https://gist.github.com/VAMorales/be3e4ed472c5179…	technical-descriptionexploit
	https://www.unisys.com/solutions/cai/applications/	product
	https://www.vulncheck.com/advisories/unisys-webpe…	third-party-advisory

Impacted products

	Vendor	Product	Version
	Unisys	WebPerfect Image Suite	Affected: 3.0.3960.22810 (semver) Affected: 3.0.3960.22604 (semver)

Credits

Victor A. Morales, Senior Pentester Team Leader, GM Sectec, Corp. VulnCheck

Show details on NVD website

JSON

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        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-39906",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
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                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-16T13:50:39.653259Z",
                "version": "2.0.3"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-QHM2-FWJ3-3R79

CVE-2026-39906 (GCVE-0-2026-39906)

Tags

Sightings

Nomenclature