6.4

CVE-2024-54021: fortinet fortios HTTP Request/Response Splitting

CVSS: 6.4v3.1MediumAnalyzed
Published 14-01-2025Last modified 06-08-2025
Open JSON

Vulnerability summary

CVE-2024-54021 is a medium (CVSS 6.4) HTTP Request/Response Splitting vulnerability in fortinet fortios. EPSS estimates a 0.76% chance of exploitation in the next 30 days, higher than 54.8% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.4/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.76%
0%100%
Low · -0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 14-01-2025
    PublishedVulnerability first disclosed.
  2. 06-08-2025
    Last modifiedVulnerability information updated.

Description

An Improper Neutralization of CRLF Sequences in HTTP Headers ('http response splitting') vulnerability [CWE-113] in Fortinet FortiOS 7.2.0 through 7.6.0, FortiProxy 7.2.0 through 7.4.5 may allow a remote unauthenticated attacker to bypass the file filter via crafted HTTP headers.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.76%

Chance of exploitation in the next 30 days

Percentile

55%

Versus all other CVEs

30-day change

-0.02 pp

From 0.78% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.76%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Fortinet2 products
  • fortios≥ 7.4.0, ≤ 7.4.4 | ≥ 7.2.0, ≤ 7.2.8 | ≥ 7.2.0, < 7.2.9 | ≥ 7.4.0, < 7.4.5 | 7.6.0
  • fortiproxy≥ 7.4.0, ≤ 7.4.5 | ≥ 7.2.0, ≤ 7.2.11 | ≥ 7.2.0, < 7.2.12 | ≥ 7.4.0, < 7.4.6

1 vendor · 2 products

References

1 links