Skip to content
Patcharo
Back to the results

Vulnerabilities

High

CVE-2023-41677 — A insufficiently protected credentials in Fortinet FortiProxy 7.4.0, 7.2.0 through 7.2.6, 7.0.0 through 7.0.1…

CVE-2023-41677 · FortiOS · CVSS 8.8

In brief

Severity · CVSS
High8.8CVSS 3.1, High
EPSS
0.75%
CISA KEV
Not listed
CERT-FR
No advisory or alert referenced in the catalog
Vendor
Fortinet
Published · Modified
·
Last verified

Summary

A insufficiently protected credentials in Fortinet FortiProxy 7.4.0, 7.2.0 through 7.2.6, 7.0.0 through 7.0.12, 2.0.0 through 2.0.13, 1.2.0 through 1.2.13, 1.1.0 through 1.1.6, 1.0.0 through 1.0.7, Fortinet FortiOS 7.4.0 through 7.4.1, 7.2.0 through 7.2.6, 7.0.0 through 7.0.12, 6.4.0 through 6.4.14, 6.2.0 through 6.2.15, 6.0.0 through 6.0.17 allows attacker to execute unauthorized code or commands via targeted social engineering attack

Weakness: CWE-522

Title, description and the vendor's statements are quoted from the CVE record; a vendor's advisory is summarised in Patcharo's words, with a link.

Affected and fixed versions

Per product and release branch, as the vendor's CVE record and official advisory state them. A fixed release is shown only when a document names it: the vendor's, or CERT-FR's for Check Point, with its source.

8 branches with a published fixed release · 5 branches to migrate

Fortinet FortiOS

Source: FG-IR-23-493CVE-2023-41677

  1. 7.4
    Affected versions7.4.0 – 7.4.1
    First fixed release7.4.2
  2. 7.2End of life
    Affected versions7.2.0 – 7.2.6
    First fixed release7.2.7
  3. 7.0End of life
    Affected versions7.0.0 – 7.0.12
    First fixed release7.0.13
  4. 6.4End of life
    Affected versions6.4.0 – 6.4.14
    First fixed release6.4.15
  5. 6.2End of life
    Affected versions6.2.0 – 6.2.15
    First fixed release6.2.16
  6. 6.0End of life
    Affected versions6.0.0 – 6.0.18
    First fixed releaseMigration to a fixed release required

Releases the vendor does not list are not affected.

Fortinet FortiProxy

Source: FG-IR-23-493CVE-2023-41677

  1. 7.4
    Affected versions7.4.0 – 7.4.1
    First fixed release7.4.2
  2. 7.2Approaching end of support
    Affected versions7.2.0 – 7.2.7
    First fixed release7.2.8
  3. 7.0End of life
    Affected versions7.0.0 – 7.0.13
    First fixed release7.0.14
  4. 2.0End of life
    Affected versions2.0.0 – 2.0.14
    First fixed releaseMigration to a fixed release required
  5. 1.2End of life
    Affected versions1.2.0 – 1.2.13
    First fixed releaseMigration to a fixed release required
  6. 1.1End of life
    Affected versions1.1.0 – 1.1.6
    First fixed releaseMigration to a fixed release required
  7. 1.0End of life
    Affected versions1.0.0 – 1.0.7
    First fixed releaseMigration to a fixed release required

Releases the vendor does not list are not affected.

Remediation

Fix available

Vendor fix

  • FortiOS 7.47.4.2
  • FortiOS 7.27.2.7
  • FortiOS 7.07.0.13
  • FortiOS 6.46.4.15
  • FortiOS 6.26.2.16
  • FortiProxy 7.47.4.2
  • FortiProxy 7.27.2.8
  • FortiProxy 7.07.0.14

Upgrade to a fixed release listed above for your branch, or to a later fixed release the vendor explicitly supports.

Branches without a fix of their own: migrate to a fixed release

  • FortiOS 6.0
  • FortiProxy 2.0
  • FortiProxy 1.2
  • FortiProxy 1.1
  • FortiProxy 1.0

Please upgrade to FortiSASE version 23.4.a or above Please upgrade to FortiOS version 7.4.2 or above Please upgrade to FortiOS version 7.2.7 or above Please upgrade to FortiOS version 7.0.13 or above Please upgrade to FortiOS version 6.4.15 or above Please upgrade to FortiOS version 6.2.16 or above Please upgrade to

Full text

FortiProxy version 7.4.2 or above Please upgrade to FortiProxy version 7.2.8 or above Please upgrade to FortiProxy version 7.0.14 or above

SourceFortinet (CVE record)

SourceFortiGuard FG-IR-23-493

Last verified 1 Oct 2026 at 09:29 UTC

Known exploitation

Not listed in CISA KEV as of the last check.

0.75% probability of exploitation in the next 30 days (percentile 53%).

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CERT-FR

No CERT-FR advisory or alert of the last two years references this CVE, for the vendors Patcharo covers.

Timeline

  1. Published by the source
  2. Source record last modified
  3. EPSS score computed
  4. Last verified by Patcharo

Official sources

References

Fortinet · NVD · FIRST EPSS · FortiGuard FG-IR-23-493

How Patcharo reads this

Affected and fixed releases come from the vendor's structured statements and are matched against exact versions; CVSS from NVD, exploitation from CISA KEV and the vendor's own advisory, probability from FIRST EPSS. Missing data stays Unknown and never becomes Not affected.

Read the methodologyRead the guide: FortiOS version numbering: branches, patch releases and the Feature and Mature labels

Related vulnerabilities

Other records affecting the same products, newest first.

  • CVE-2026-71407A Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiOS 7.6.1 through 7.6.6 m…High
  • CVE-2025-53844A out-of-bounds write vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, For…High
  • CVE-2025-53847A missing authentication for critical function vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS…High
  • CVE-2025-68686Fortinet FortiOS Exposure of Sensitive Information to an Unauthorized Actor VulnerabilityMediumKEV
  • CVE-2025-64157A use of externally-controlled format string vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4, FortiOS 7…High

All FortiOS vulnerabilitiesAll FortiProxy vulnerabilitiesAll Fortinet vulnerabilities