Fortra Globalscape Administration Server Denial of Service

published 2023-06-22 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-34426

cvss: 7.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.9%; EPSS 0.9% chance of exploitation in 30 days, percentile 60%
public exploits: 0; none known

Fortra Globalscape EFT versions before 8.1.0.16 suffer from a denial of service vulnerability, where a compressed message that decompresses to itself can cause infinite recursion and crash the service

Patch / fix

fixed in 1

Fortra Globalscape EFT 8.1.0.16

CISA SSVC

Exploitation: Proof of concept is public
Automatable: yes
Technical impact: partial
Assessed: 23 mo ago (2024-12-04)

Exploit prediction

0.90% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

rapid7.com https://www.rapid7.com/blog/post/2023/06/22/multiple-vulnerabilities-in-fortra-globalscape-eft-administration-server-fixed/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Fortra Globalscape EFT

Classification

Weakness

CWE-400 Uncontrolled Resource Consumption
CWE-674 Uncontrolled Recursion

References

rapid7.com /blog/post/2023/06/22/multiple-vulnerabilities-in-fortra-globalscape-eft-administration-server-fixed/
exploit, third-party-advisory
kb.globalscape.com /Knowledgebase/11588/Is-EFT-susceptible-to-the-Denial-of-service-via-recursive-Deflate-Stream-vulnerability
vendor-advisory

Sources

CVE List CVE-2023-2990
NVD CVE-2023-2990

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary