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CVE-2023-36641

A numeric truncation error vulnerability in Fortinet FortiOS 7.4.0, FortiOS 7.2.0 through 7.2.5, FortiOS 7.0.0 through 7.0.12, FortiOS 6.4…

Medium6.2EPSS 1.4%
Published
Updated
Reserved
Assigned by
fortinet

Description

A numeric truncation error vulnerability in Fortinet FortiOS 7.4.0, FortiOS 7.2.0 through 7.2.5, FortiOS 7.0.0 through 7.0.12, FortiOS 6.4 all versions, FortiOS 6.2 all versions, FortiOS 6.0 all versions, FortiProxy 7.2.0 through 7.2.4, FortiProxy 7.0.0 through 7.0.10, FortiProxy 2.0 all versions, FortiProxy 01.02 all versions, FortiProxy 1.2 all versions, FortiProxy 01.01 all versions, FortiProxy 1.1 all versions, FortiProxy 01.00 all versions allows attacker to denial of service via specifically crafted HTTP requests.

Timeline

  1. ID reserved

    By fortinet

  2. · 5 months later

    Published

  3. · 3 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

CVSS scores of CVE-2023-36641, by who scored it
Scored byCVSSScoreVector
fortinetCNA (assigner)3.1Medium6.2CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:P/RL:U/RC:C
NVDNVD · Modified3.1Medium6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
1.4% · top 28% of all CVEs (7 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.2.

Weakness

Affected products

  • Fortinet · FortiOS

    • affected 7.4.0
    • affected 7.2.0 – ≤ 7.2.5
    • affected 7.0.0 – ≤ 7.0.12
    • affected 6.4.0 – ≤ 6.4.16
    • affected 6.2.0 – ≤ 6.2.17
    • affected 6.0.0 – ≤ 6.0.18

  • Fortinet · FortiProxy

    • affected 7.2.0 – ≤ 7.2.4
    • affected 7.0.0 – ≤ 7.0.10
    • affected 2.0.0 – ≤ 2.0.14
    • 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 01.00.00 – ≤ 01.00.07

What to do

Solution: Upgrade to FortiProxy version 7.2.5 or above Upgrade to FortiProxy version 7.0.11 or above Upgrade to FortiOS version 7.4.1 or above Upgrade to FortiOS version 7.2.6 or above Upgrade to FortiOS version 7.0.13 or above

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

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Record last updated .