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No exploitation reportedAwaiting NVD analysis

CVE-2026-126154

No exploitation reported by the sources we read.

  • Published2026-11-11
  • WeaknessCWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A out-of-bounds write vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, FortiMail 7.6.0 through 7.6.6, FortiMail 7.4.0 through 7.4.8, FortiMail 7.2 all versions may allow a remote unauthenticated attacker to cause a denial of service via a specially crafted HTTP request.

Timeline

dates in UTC
  1. 2026-11-1121:29CVE publishedCNA

Versions per branch

Products declared by the CNA

As fortinet, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • Fortinet FortiMailother versions: not affected
    Affected
    • ≥ 8.0.0, ≤ 8.0.1no fix statedsemver
    • ≥ 7.6.0, ≤ 7.6.6no fix statedsemver
    • ≥ 7.4.0, ≤ 7.4.8no fix statedsemver
    • ≥ 7.2.0, ≤ 7.2.9no fix statedsemver

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-11

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-126154 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVE record2026-11-11
  • CNACVSS 3.17.52026-11-11
  • CNAweakness (CWE)CWE-7872026-11-11

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C
Published
2026-11-11

Frequently asked questions

What is CVE-2026-126154?

A out-of-bounds write vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, FortiMail 7.6.0 through 7.6.6, FortiMail 7.4.0 through 7.4.8, FortiMail 7.2 all versions may allow a remote unauthenticated attacker to cause a denial of service via a specially crafted HTTP request.

Is CVE-2026-126154 actively exploited?

Active exploitation of CVE-2026-126154 has not been confirmed.

What is the CVSS score for CVE-2026-126154?

CVE-2026-126154 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C.

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