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Medium 1 vendor · 1 advisory

CVE-2025-43892

CVE-2025-43892 key facts

CISA KEV
Not listed (catalogue checked )
Highest advisory rating
Medium
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C · base score 4.1, scored by fortinetAttack vector: network. Attack complexity: low. Privileges required: low. User interaction: none. Scope: unchanged. Confidentiality impact: low. Integrity impact: none. Availability impact: none.
Weakness
  • CWE-126 Information disclosure
EPSS
0.38% chance of exploitation in the next 30 days (32nd percentile). FIRST EPSS, .
CISA SSVC
Exploitation: none observed. Automatable: no. Technical impact: partial. CISA, .
Vendor advisories
1 from Fortinet
Assigned by
fortinet (CNA)
CVE record published
Listed by VulniPulse

Ratings, versions and fixes are quoted from the vendor advisories that cover only CVE-2025-43892; each belongs to its advisory, not to every product listed. How records are collected and checked.

Description

A buffer over-read vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions may allow an authenticated remote attacker to return a portion of device memory in the redirect response via submitting a specially crafted request.

Text from the CVE.org record (fortinet).

How do I fix CVE-2025-43892?

  • Upgrade to FortiOS version 7.6.4 or above Upgrade to FortiOS version 7.4.9 or above Fortinet remediated this issue in FortiSASE version 25.4.b and hence customers do not need to perform any action. Upgrade to FortiProxy version 7.6.6 or above Upgrade to FortiProxy version 7.4.14 or above (CVE.org record)

Vendor advisories for CVE-2025-43892

Fortinet

1 advisory
  • Advisory severityMedium4.3

    Medium [CVE-2025-43892 +1] Buffer overread in authd and wad daemon

    FG-IR-26-154Source published Source updated

    This bulletin covers 2 CVEs. The products, versions, score and guidance below describe the bulletin; check its source for applicability to this specific CVE.

    CVSSv3 Score: 4.3 A buffer over-read vulnerability [CWE-126] in FortiOS, FortiProxy, and FortiSASE may allow an authenticated remote attacker to return a portion of device memory in the redirect response via submitting a specially crafted request. Revised on 2026-07-14 00:00:00

    Affected products in this advisory
    • FortiOS
    • FortiProxy
    Source-reported affected versions
    • FortiOS: 6.4.0 through 7.6.3 (vendor-listed versions)
    • FortiProxy: 7.0.0 through 7.6.5 (vendor-listed versions)
    Source-reported fixed versions
    • FortiOS 7.6: 7.6.4
    • FortiOS 7.4: 7.4.9
    • FortiOS 7.2: migrate to a fixed release
    • FortiOS 7.0: migrate to a fixed release

    5 more entries in the full advisory.

    Mitigation guidance
    • Upgrade per the Affected/Solution table: FortiOS 7.6: 7.6.4; FortiOS 7.4: 7.4.9; FortiOS 7.2: migrate to a fixed release; FortiOS 7.0: migrate to a fixed release; FortiOS 6.4: migrate to a fixed release; ….
    Full advisory and evidenceOpen source bulletin

References

Timeline

  1. CVE record published
  2. First vendor advisory listed by VulniPulse
  3. CVE record last updated

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