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CVE-2023-33302

A buffer copy without checking size of input ('classic buffer overflow') in Fortinet FortiMail webmail and administrative interface…

Medium4.5EPSS 0.38%
Published
Updated
Reserved
Assigned by
fortinet

Description

A buffer copy without checking size of input ('classic buffer overflow') in Fortinet FortiMail webmail and administrative interface version 6.4.0 through 6.4.4 and before 6.2.6 and FortiNDR administrative interface version 7.2.0 and before 7.1.0 allows an authenticated attacker with regular webmail access to trigger a buffer overflow and to possibly execute unauthorized code or commands via specifically crafted HTTP requests.

Timeline

  1. ID reserved

    By fortinet

  2. · 23 months later

    Published

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-2023-33302, by who scored it
Scored byCVSSScoreVector
fortinetCNA (assigner)3.1Medium4.5CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:U/RC:C
NVDNVD · Analyzed3.1High8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
0.38% · top 68% 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 4.5.

Weakness

Affected products

  • Fortinet · FortiNDR

    • affected 7.2.0
    • affected 7.1.0
    • affected 7.0.0 – ≤ 7.0.6
    • affected 1.5.0 – ≤ 1.5.3
    • affected 1.4.0
    • affected 1.3.0 – ≤ 1.3.1
    • affected 1.2.0
    • affected 1.1.0

  • Fortinet · FortiMail

    • affected 6.4.0 – ≤ 6.4.4
    • affected 6.2.0 – ≤ 6.2.6
    • affected 6.0.0 – ≤ 6.0.10
    • affected 5.4.0 – ≤ 5.4.12
    • affected 5.3.12 – ≤ 5.3.13
    • affected 5.3.0 – ≤ 5.3.10
    • affected 5.2.0 – ≤ 5.2.10
    • affected 5.1.0 – ≤ 5.1.7
    • affected 5.0.0 – ≤ 5.0.11

What to do

Solution: Please upgrade to FortiMail version 7.0.0 or above Please upgrade to FortiMail version 6.4.5 or above Please upgrade to FortiMail version 6.2.7 or above Please upgrade to FortiMail version 6.0.11 or above Please upgrade to FortiNDR version 7.2.1 or above

References (1)

Sources

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

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Record last updated .