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Critical

CVE-2021-32589 — A Use After Free (CWE-416) vulnerability in FortiManager version 7.0.0, version 6.4.5 and below, version 6.2.…

CVE-2021-32589 · FortiManager · CVSS 9.8

In brief

Severity · CVSS
Critical9.8CVSS 3.1, Critical
EPSS
9%
CISA KEV
Not listed
CERT-FR
No advisory or alert referenced in the catalog
Vendor
Fortinet
Published · Modified
·
Last verified

Summary

A Use After Free (CWE-416) vulnerability in FortiManager version 7.0.0, version 6.4.5 and below, version 6.2.7 and below, version 6.0.10 and below, version 5.6.10 and below, version 5.4.7 and below, version 5.2.10 and below, version 5.0.12 and below and FortiAnalyzer version 7.0.0, version 6.4.5 and below, version 6.2.7 and below, version 6.0.10 and below, version 5.6.10 and below, version 5.4.7 and below, version 5.3.11, version 5.2.10 to 5.2.4 fgfmsd daemon may allow a remote, non-authenticated attacker to execute unauthorized code as root via sending a specifically crafted request to the fgfm port of the targeted device.

Weakness: CWE-416

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.

12 branches with a published fixed release · 12 branches to migrate

Fortinet FortiManager

Source: FG-IR-21-067CVE-2021-32589

  1. 7.0End of life
    Affected versions7.0.0
    First fixed release7.0.1
  2. 6.4End of life
    Affected versions6.4.0 – 6.4.5
    First fixed release6.4.6
  3. 6.2End of life
    Affected versions6.2.0 – 6.2.7
    First fixed release6.2.8
  4. 6.0End of life
    Affected versions6.0.0 – 6.0.10
    First fixed release6.0.11
  5. 5.6End of life
    Affected versions5.6.0 – 5.6.10
    First fixed release5.6.11
  6. 5.4End of life
    Affected versions5.4.0 – 5.4.7
    First fixed releaseMigration to a fixed release required
  7. 5.2End of life
    Affected versions5.2.0 – 5.2.10
    First fixed releaseMigration to a fixed release required
  8. 5.0End of life
    Affected versions5.0.0 – 5.0.12
    First fixed releaseMigration to a fixed release required

Releases the vendor does not list are not affected.

Fortinet FortiAnalyzer

Source: FG-IR-21-067CVE-2021-32589

  1. 7.0End of life
    Affected versions7.0.0
    First fixed release7.0.1
  2. 6.4End of life
    Affected versions6.4.0 – 6.4.5
    First fixed release6.4.6
  3. 6.2End of life
    Affected versions6.2.0 – 6.2.7
    First fixed release6.2.8
  4. 6.0End of life
    Affected versions6.0.0 – 6.0.10
    First fixed release6.0.11
  5. 5.6End of life
    Affected versions5.6.0 – 5.6.10
    First fixed release5.6.11
  6. 5.4End of life
    Affected versions5.4.0 – 5.4.7
    First fixed releaseMigration to a fixed release required
  7. 5.3
    Affected versions5.3.11
    First fixed releaseMigration to a fixed release required
  8. 5.2End of life
    Affected versions5.2.4 – 5.2.10
    First fixed releaseMigration to a fixed release required

Releases the vendor does not list are not affected.

Fortinet FortiPortal

Source: FG-IR-21-067

  1. 6.0
    Affected versions6.0.0 – 6.0.4
    First fixed release6.0.6
  2. 5.3
    Affected versions5.3.0 – 5.3.6
    First fixed release5.3.7
  3. 5.2
    Affected versionsAll releases of the branch
    First fixed releaseMigration to a fixed release required
  4. 5.1
    Affected versionsAll releases of the branch
    First fixed releaseMigration to a fixed release required
  5. 5.0
    Affected versionsAll releases of the branch
    First fixed releaseMigration to a fixed release required
  6. 4.2
    Affected versions4.2.1 – 4.2.2
    First fixed releaseMigration to a fixed release required
  7. 4.1
    Affected versionsAll releases of the branch
    First fixed releaseMigration to a fixed release required
  8. 4.0
    Affected versionsAll releases of the branch
    First fixed releaseMigration to a fixed release required

Remediation

Fix available

Vendor fix

  • FortiManager 7.07.0.1
  • FortiManager 6.46.4.6
  • FortiManager 6.26.2.8
  • FortiManager 6.06.0.11
  • FortiManager 5.65.6.11
  • FortiAnalyzer 7.07.0.1
  • FortiAnalyzer 6.46.4.6
  • FortiAnalyzer 6.26.2.8
  • FortiAnalyzer 6.06.0.11
  • FortiAnalyzer 5.65.6.11
  • FortiPortal 6.06.0.6
  • FortiPortal 5.35.3.7

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

  • FortiManager 5.4
  • FortiManager 5.2
  • FortiManager 5.0
  • FortiAnalyzer 5.4
  • FortiAnalyzer 5.3
  • FortiAnalyzer 5.2
  • FortiPortal 5.2
  • FortiPortal 5.1
  • FortiPortal 5.0
  • FortiPortal 4.2
  • FortiPortal 4.1
  • FortiPortal 4.0

Please upgrade to FortiPortal version 6.0.6 or above Please upgrade to FortiPortal version 5.3.7 or above Please upgrade to FortiManager version 7.0.1 or above Please upgrade to FortiManager version 6.4.6 or above Please upgrade to FortiManager version 6.2.8 or above Please upgrade to FortiManager version 6.0.11 or

Full text

above Please upgrade to FortiManager version 5.6.11 or above Please upgrade to FortiAnalyzer version 7.0.1 or above Please upgrade to FortiAnalyzer version 6.4.6 or above Please upgrade to FortiAnalyzer version 6.2.8 or above Please upgrade to FortiAnalyzer version 6.0.11 or above Please upgrade to FortiAnalyzer version 5.6.11 or above

SourceFortinet (CVE record)

SourceFortiGuard FG-IR-21-067

Last verified 1 Oct 2026 at 09:30 UTC

Known exploitation

Not listed in CISA KEV as of the last check.

9% probability of exploitation in the next 30 days (percentile 95%).

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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-21-067

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

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