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Critical

CVE-2023-25610 — A buffer underwrite ('buffer underflow') vulnerability in the administrative interface of Fortinet FortiOS ve…

CVE-2023-25610 · FortiAnalyzer · CVSS 9.8

In brief

Severity · CVSS
Critical9.8CVSS 3.1, Critical
EPSS
18%
CISA KEV
Not listed
CERT-FR
No advisory or alert referenced in the catalog
Vendor
Fortinet
Published · Modified
·
Last verified

Summary

A buffer underwrite ('buffer underflow') vulnerability in the administrative interface of Fortinet FortiOS version 7.2.0 through 7.2.3, version 7.0.0 through 7.0.6, version 6.4.0 through 6.4.11 and version 6.2.12 and below, FortiProxy version 7.2.0 through 7.2.2, version 7.0.0 through 7.0.8, version 2.0.12 and below and FortiOS-6K7K version 7.0.5, version 6.4.0 through 6.4.10 and version 6.2.0 through 6.2.10 and below allows a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests.

Weakness: CWE-124

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.

29 branches with a published fixed release · 10 branches to migrate

Fortinet FortiSwitchManager

Source: FG-IR-23-001CVE-2023-25610

  1. 7.2
    Affected versions7.2.0 – 7.2.1
    First fixed release7.2.2
  2. 7.0
    Affected versions7.0.0 – 7.0.1
    First fixed release7.0.2

Releases the vendor does not list are not affected.

Fortinet FortiAnalyzer

Source: FG-IR-23-001CVE-2023-25610

  1. 7.2End of life
    Affected versions7.2.0
    First fixed release7.2.1
  2. 7.0End of life
    Affected versions7.0.0 – 7.0.4
    First fixed release7.0.5
  3. 6.4End of life
    Affected versions6.4.0 – 6.4.11
    First fixed release6.4.12
  4. 6.2End of life
    Affected versions6.2.0 – 6.2.10
    First fixed release6.2.11
  5. 6.0End of life
    Affected versions6.0.0 – 6.0.11
    First fixed release6.0.12

Releases the vendor does not list are not affected.

Fortinet FortiOS-6K7K

Source: FG-IR-23-001CVE-2023-25610

  1. 7.0
    Affected versions7.0.5
    First fixed release7.0.10
  2. 6.4
    Affected versions6.4.2, 6.4.6, 6.4.8, 6.4.10
    First fixed release6.4.12
  3. 6.2
    Affected versions6.2.9 – 6.2.126.2.6 – 6.2.76.2.4
    First fixed release6.2.13
  4. 6.0
    Affected versions6.0.12 – 6.0.186.0.10
    First fixed releaseMigration to a fixed release required

Releases the vendor does not list are not affected.

Fortinet FortiProxy

Source: FG-IR-23-001CVE-2023-25610

  1. 7.2Approaching end of support
    Affected versions7.2.0 – 7.2.2
    First fixed release7.2.3
  2. 7.0End of life
    Affected versions7.0.0 – 7.0.8
    First fixed release7.0.9
  3. 2.0End of life
    Affected versions2.0.0 – 2.0.14
    First fixed releaseMigration to a fixed release required
  4. 1.2End of life
    Affected versions1.2.0 – 1.2.13
    First fixed releaseMigration to a fixed release required
  5. 1.1End of life
    Affected versions1.1.0 – 1.1.6
    First fixed releaseMigration to a fixed release required

Releases the vendor does not list are not affected.

Fortinet FortiOS

Source: FG-IR-23-001CVE-2023-25610

  1. 7.2End of life
    Affected versions7.2.0 – 7.2.3(Special note for FortiOS in Additional Note section)
    First fixed release7.2.4
  2. 7.0End of life
    Affected versions7.0.0 – 7.0.9(Special note for FortiOS in Additional Note section)
    First fixed release7.0.10
  3. 6.4End of life
    Affected versions6.4.0 – 6.4.11(Special note for FortiOS in Additional Note section)
    First fixed release6.4.12
  4. 6.2End of life
    Affected versions6.2.0 – 6.2.12(Special note for FortiOS in Additional Note section)
    First fixed release6.2.13
  5. 6.0End of life
    Affected versions6.0.0 – 6.0.18(Special note for FortiOS in Additional Note section)
    First fixed releaseMigration to a fixed release required
  6. 5.6End of life
    Affected versions5.6.0 – 5.6.14(Special note for FortiOS in Additional Note section)
    First fixed releaseMigration to a fixed release required
  7. 5.4End of life
    Affected versions5.4.0 – 5.4.13(Special note for FortiOS in Additional Note section)
    First fixed releaseMigration to a fixed release required
  8. 5.2End of life
    Affected versions5.2.0 – 5.2.15(Special note for FortiOS in Additional Note section)
    First fixed releaseMigration to a fixed release required
  9. 5.0End of life
    Affected versions5.0.0 – 5.0.14(Special note for FortiOS in Additional Note section)
    First fixed releaseMigration to a fixed release required

Releases the vendor does not list are not affected.

Fortinet FortiManager

Source: FG-IR-23-001CVE-2023-25610

  1. 7.2End of life
    Affected versions7.2.0
    First fixed release7.2.1
  2. 7.0End of life
    Affected versions7.0.0 – 7.0.4
    First fixed release7.0.5
  3. 6.4End of life
    Affected versions6.4.0 – 6.4.11
    First fixed release6.4.12
  4. 6.2End of life
    Affected versions6.2.0 – 6.2.10
    First fixed release6.2.11
  5. 6.0End of life
    Affected versions6.0.0 – 6.0.11
    First fixed release6.0.12

Releases the vendor does not list are not affected.

Fortinet FortiWeb

Source: FG-IR-23-001CVE-2023-25610

  1. 7.2Approaching end of support
    Affected versions7.2.0 – 7.2.1
    First fixed release7.2.2
  2. 7.0End of life
    Affected versions7.0.0 – 7.0.6
    First fixed release7.0.7
  3. 6.4End of life
    Affected versions6.4.0 – 6.4.2
    First fixed release6.4.3
  4. 6.3End of life
    Affected versions6.3.0 – 6.3.22
    First fixed release6.3.23
  5. 6.2End of life
    Affected versions6.2.0 – 6.2.7
    First fixed release6.2.8
  6. 6.1End of life
    Affected versions6.1.0 – 6.1.3
    First fixed release6.1.4

Releases the vendor does not list are not affected.

Fortinet FortiSwitch

Source: FG-IR-23-001

  1. 7.4
    Affected versionsNot affected
    First fixed release—
  2. 7.2
    Affected versions7.2.0 – 7.2.3
    First fixed release7.2.4
  3. 7.0
    Affected versions7.0.0 – 7.0.6
    First fixed release7.0.7
  4. 6.4
    Affected versionsAll releases of the branch
    First fixed releaseMigration to a fixed release required
  5. 6.2
    Affected versionsNot affected
    First fixed release—

Remediation

Fix available

Vendor fix

  • FortiSwitchManager 7.27.2.2
  • FortiSwitchManager 7.07.0.2
  • FortiAnalyzer 7.27.2.1
  • FortiAnalyzer 7.07.0.5
  • FortiAnalyzer 6.46.4.12
  • FortiAnalyzer 6.26.2.11
  • FortiAnalyzer 6.06.0.12
  • FortiOS-6K7K 7.07.0.10
  • FortiOS-6K7K 6.46.4.12
  • FortiOS-6K7K 6.26.2.13
  • FortiProxy 7.27.2.3
  • FortiProxy 7.07.0.9
  • FortiOS 7.27.2.4
  • FortiOS 7.07.0.10
  • FortiOS 6.46.4.12
  • FortiOS 6.26.2.13
  • FortiManager 7.27.2.1
  • FortiManager 7.07.0.5
  • FortiManager 6.46.4.12
  • FortiManager 6.26.2.11
  • FortiManager 6.06.0.12
  • FortiWeb 7.27.2.2
  • FortiWeb 7.07.0.7
  • FortiWeb 6.46.4.3
  • FortiWeb 6.36.3.23
  • FortiWeb 6.26.2.8
  • FortiWeb 6.16.1.4
  • FortiSwitch 7.27.2.4
  • FortiSwitch 7.07.0.7

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

  • FortiOS-6K7K 6.0
  • FortiProxy 2.0
  • FortiProxy 1.2
  • FortiProxy 1.1
  • FortiOS 6.0
  • FortiOS 5.6
  • FortiOS 5.4
  • FortiOS 5.2
  • FortiOS 5.0
  • FortiSwitch 6.4

Please upgrade to FortiOS version 7.4.0 or above Please upgrade to FortiOS version 7.2.4 or above Please upgrade to FortiOS version 7.0.10 or above Please upgrade to FortiOS version 6.4.12 or above Please upgrade to FortiOS version 6.2.13 or above Please upgrade to FortiWeb version 7.2.2 or above Please upgrade to

Full text

FortiWeb version 7.0.7 or above Please upgrade to FortiWeb version 6.4.3 or above Please upgrade to FortiWeb version 6.3.23 or above Please upgrade to FortiWeb version 6.2.8 or above Please upgrade to FortiWeb version 6.1.4 or above Please upgrade to upcoming FortiOS version 6.0.17 or above Please upgrade to FortiSwitchManager version 7.2.2 or above Please upgrade to FortiSwitchManager version 7.0.2 or above Please upgrade to FortiProxy version 7.2.3 or above Please upgrade to FortiProxy version 7.0.9 or above Please upgrade to FortiManager version 7.2.1 or above Please upgrad…

SourceFortinet (CVE record)

SourceFortiGuard FG-IR-23-001

Last verified 1 Oct 2026 at 09:29 UTC

Known exploitation

Not listed in CISA KEV as of the last check.

18% probability of exploitation in the next 30 days (percentile 97%).

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-23-001

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-2026-70468A authentication bypass using an alternate path or channel vulnerability in Fortinet FortiManager 7.6.1, Fort…High
  • 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-2025-61848An improper neutralization of special elements used in an sql command ('sql injection') vulnerability in Fort…High
  • CVE-2025-53847A missing authentication for critical function vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS…High

All FortiAnalyzer vulnerabilitiesAll FortiProxy vulnerabilitiesAll FortiOS vulnerabilitiesAll FortiManager vulnerabilitiesAll FortiWeb vulnerabilitiesAll Fortinet vulnerabilities