CVE-2023-2991Public exploitNetwork attack vector

Drive serial disclosure via unauthenticated TER response

Published Jun 22, 2023 · Updated Dec 6, 2024

Information disclosure in Fortra Globalscape EFT 8.0.0.38 through 8.1.0.14 allows remote attackers to derive the server drive serial. The administration service accepts a header-only message type 0x138 without login and returns a lightly obfuscated SHA-256 value derived from the drive serial in its HASH field. Exposure requires network access to the remote administration port; the small serial-number space permits recovery of the underlying identifier.

CVSS severity5.3
Medium
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Fortra Globalscape EFT 8.0.0.38 through 8.1.0.14 allows remote attackers to derive the server drive serial. The administration service accepts a header-only message type 0x138 without login and returns a lightly obfuscated SHA-256 value derived from the drive serial in its HASH field. Exposure requires network access to the remote administration port; the small serial-number space permits recovery of the underlying identifier.

The record

CVE
CVE-2023-2991
Published
Jun 22, 2023
Updated
Dec 6, 2024
Vendor
Fortra
Product
Globalscape EFT
Classifications
CWE-200, T1592.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 22, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=8.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Fortra · Globalscape EFTversion=8.0.0

Published CVSS scores

5.3National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1592.001Gather Victim Host Information: Hardware

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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