CVE-2022-42472

MEDIUMNVD 4.25.4
EchelonGraph scoreMEDIUM confidence

“▲” beside the score: it is higher than NVD's CVSS score.

Score 5.4 from GitHub Security Advisory published 2023-02-16. NVD baseline CVSS 4.2; sources differ by 1.2.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
5.4EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 4.2Exploit: None knownExposed services: Not assessed

Please upgrade to FortiProxy version 7.2.2 or above Please upgrade to FortiProxy version 7.0.8 or above Please upgrade to FortiProxy version 2.0.11 or above Please upgrade to FortiOS version 7.2.3 or above Please upgrad… (from the CVE record's solution, Fortinet, Inc.) — apply it.

A improper neutralization of crlf sequences in http headers ('http response splitting') in Fortinet FortiOS versions 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.11, 6.2.0 through 6.2.12, 6.0.0 through 6.0.16, FortiProxy 7.2.0 through 7.2.1, 7.0.0 through 7.0.7, 2.0.0 through 2.0.10, 1.2.0 through 1.2.13, 1.1.0 through 1.1.6 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.

CVSS v3
4.2
EG Score
5.4MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity54% × 45%
The EG Score, 5.4 of 10.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: Please upgrade to FortiProxy version 7.2.2 or above Please upgrade to FortiProxy version 7.0.8 or above Please upgrade to FortiProxy version 2.0.11 or above Please upgrade to FortiOS version 7.2.3 or above Please upgrad… (from the CVE record's solution, Fortinet, Inc.). Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
38th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

Please upgrade to FortiProxy version 7.2.2 or above Please upgrade to FortiProxy version 7.0.8 or above Please upgrade to FortiProxy version 2.0.11 or above Please upgrade to FortiOS version 7.2.3 or above Please upgrad… (from the CVE record's solution, Fortinet, Inc.). Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

February 16, 2023

Last Modified

November 21, 2024

References (1)

Weakness Classification(3)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 27× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 87 of 165 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 13 repeat rows among the latest 100 are merged into the row they repeat. The 78 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 22:10 UTCEG score recompute
  2. 2026-10-11 13:44 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  3. 2026-10-10 19:57 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  4. 2026-10-09 20:04 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  5. 2026-10-08 17:05 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  6. 2026-10-07 23:45 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  7. 2026-10-06 15:14 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  8. 2026-10-05 17:40 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  9. 2026-10-04 23:19 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  10. 2026-10-03 14:23 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  11. 2026-10-02 16:23 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  12. 2026-10-01 19:47 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  13. 2026-09-30 16:06 UTCEG score recompute
  14. 2026-09-30 15:01 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  15. 2026-09-29 15:16 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  16. 2026-09-28 13:48 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  17. 2026-09-27 13:42 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  18. 2026-09-26 15:55 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  19. 2026-09-26 00:22 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  20. 2026-09-23 13:45 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  21. 2026-09-20 20:13 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  22. 2026-09-19 15:38 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  23. 2026-09-16 14:05 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  24. 2026-09-16 05:10 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  25. 2026-09-15 03:07 UTCEPSS rescoreEPSS 0.5% · 38th percentile
Show 62 more
  1. 2026-09-13 16:44 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  2. 2026-09-12 14:57 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  3. 2026-09-11 14:50 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  4. 2026-09-11 09:33 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  5. 2026-09-08 21:57 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  6. 2026-09-07 15:58 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  7. 2026-09-06 13:45 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  8. 2026-09-05 15:25 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  9. 2026-09-04 13:57 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  10. 2026-09-04 05:04 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  11. 2026-09-02 14:09 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  12. 2026-09-01 13:51 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  13. 2026-08-30 19:14 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  14. 2026-08-30 01:19 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  15. 2026-08-28 21:38 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  16. 2026-08-27 14:22 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  17. 2026-08-26 14:43 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  18. 2026-08-25 13:46 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  19. 2026-08-24 14:13 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  20. 2026-08-23 00:17 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  21. 2026-08-21 23:46 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  22. 2026-08-20 22:53 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  23. 2026-08-19 17:01 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  24. 2026-08-18 13:45 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  25. 2026-08-17 13:44 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  26. 2026-08-16 14:53 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  27. 2026-08-16 02:12 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  28. 2026-08-15 01:27 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  29. 2026-08-13 21:58 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  30. 2026-08-12 13:48 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  31. 2026-08-11 13:39 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  32. 2026-08-09 13:44 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  33. 2026-08-08 16:34 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  34. 2026-08-07 16:24 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  35. 2026-08-06 13:44 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  36. 2026-08-05 19:15 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  37. 2026-08-04 15:07 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  38. 2026-08-04 10:35 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  39. 2026-08-03 10:33 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  40. 2026-08-02 02:24 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  41. 2026-08-01 04:13 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  42. 2026-07-30 16:25 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  43. 2026-07-30 01:28 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  44. 2026-07-28 15:34 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  45. 2026-07-26 14:52 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  46. 2026-07-25 14:15 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  47. 2026-07-24 14:15 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  48. 2026-07-23 14:16 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  49. 2026-07-23 02:14 UTCEG score recompute
  50. 2026-07-22 23:02 UTCEG score recompute
  51. 2026-07-22 14:06 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  52. 2026-07-21 15:23 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  53. 2026-07-20 17:05 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  54. 2026-07-19 14:29 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  55. 2026-07-19 02:27 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  56. 2026-07-18 10:03 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  57. 2026-07-15 16:56 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  58. 2026-07-15 01:58 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  59. 2026-07-13 22:28 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  60. 2026-07-13 06:11 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  61. 2026-07-12 05:44 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  62. 2026-07-11 08:25 UTCEPSS rescoreEPSS 0.5% · 37th percentile

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Frequently asked(5)

What is CVE-2022-42472?
CVE-2022-42472 is a medium-severity vulnerability; its CVE record was published on February 16, 2023. A improper neutralization of crlf sequences in http headers ('http response splitting') in Fortinet FortiOS versions 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.11, 6.2.0 through 6.2.12, 6.0.0 through 6.0.16, FortiProxy 7.2.0 through 7.2.1, 7.0.0 through 7.0.7, 2.0.0 through 2.0.10,…
When was the CVE record for CVE-2022-42472 published?
The CVE record for CVE-2022-42472 was published on February 16, 2023. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of November 21, 2024; the record at its source may have been updated since.
Is CVE-2022-42472 actively exploited?
CVE-2022-42472 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (38th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2022-42472?
CVE-2022-42472 has a CVSS v3 base score of 4.2 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 5.4 (MEDIUM).
How do I remediate CVE-2022-42472?
The CVE record's solution for CVE-2022-42472, written by its CNA Fortinet, Inc., names the fix: "Please upgrade to FortiProxy version 7.2.2 or above Please upgrade to FortiProxy version 7.0.8 or above Please upgrade to FortiProxy version 2.0.11 or above Please upgrade to FortiOS version 7.2.3 or above Please upgrad…"

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