CVE-2022-42472
A improper neutralization of crlf sequences in http headers ('http response splitting') vulnerability in Fortinet FortiOS 7.2.0 through…
- 4.0MediumCVSS base score
- 0.46%Exploitation in 30 daysEPSS · top 59% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A improper neutralization of crlf sequences in http headers ('http response splitting') vulnerability in Fortinet FortiOS 7.2.0 through 7.2.2, FortiOS 7.0.0 through 7.0.8, FortiOS 6.4.0 through 6.4.12, FortiOS 6.2 all versions, FortiOS 6.0 all versions, FortiProxy 7.2.0 through 7.2.1, FortiProxy 7.0.0 through 7.0.7, FortiProxy 2.0.0 through 2.0.10, FortiProxy 1.2 all versions, FortiProxy 01.02 all versions, FortiProxy 1.1 all versions, FortiProxy 01.01 all versions may allow an authenticated and remote attacker to perform an HTTP request splitting attack which gives attackers control of the remaining headers and body of the response.
Timeline
ID reserved
By fortinet
- 4 months later
· 4 months later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| fortinetCNA (assigner) | 3.1 | Medium4.0 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N/E:P/RL:U/RC:C |
| NVDNVD · Modified | 3.1 | Medium5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.46% · top 59% of all CVEs (11 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.0.
Affected products
- affected 7.2.0 – ≤ 7.2.1
- affected 7.0.0 – ≤ 7.0.7
- affected 2.0.0 – ≤ 2.0.10
- affected 1.2.1 – ≤ 1.2.13
- affected 01.02.00
- affected 1.1.4 – ≤ 1.1.6
- affected 01.01.00 – ≤ 01.01.03
- affected 7.2.0 – ≤ 7.2.2
- affected 7.0.0 – ≤ 7.0.8
- affected 6.4.0 – ≤ 6.4.12
- affected 6.2.0 – ≤ 6.2.17
- affected 6.0.0 – ≤ 6.0.18
What to do
Solution: Upgrade to FortiProxy version 7.2.2 or above Upgrade to FortiProxy version 7.0.8 or above Upgrade to FortiProxy version 2.0.11 or above Upgrade to FortiOS version 7.2.3 or above Upgrade to FortiOS version 7.0.9 or above Upgrade to FortiOS version 6.4.13 or above
References
References1
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2022-45542 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2022-42472)Record last updated .