CVE-2023-26207

Password disclosure via plaintext SMTP credentials in logs

Published Jun 13, 2023 · Updated Oct 22, 2024

Sensitive-data exposure in affected Fortinet FortiOS and FortiProxy releases allows attackers to read SMTP passwords from log events. The logging path records SMTP password material without preserving its ciphertext protection, leaving the credential readable in plaintext. Attackers require low-privileged access to affected device logs; affected releases include FortiOS 7.2.0 through 7.2.5 and FortiProxy 7.0.0 through 7.0.10 and 7.2.0 through 7.2.1.

CVSS severity3.3
Low
EPSS probability0.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive-data exposure in affected Fortinet FortiOS and FortiProxy releases allows attackers to read SMTP passwords from log events. The logging path records SMTP password material without preserving its ciphertext protection, leaving the credential readable in plaintext. Attackers require low-privileged access to affected device logs; affected releases include FortiOS 7.2.0 through 7.2.5 and FortiProxy 7.0.0 through 7.0.10 and 7.2.0 through 7.2.1.

The record

CVE
CVE-2023-26207
Published
Jun 13, 2023
Updated
Oct 22, 2024
Vendor
Fortinet
Product
FortiOS
Classifications
CWE-532, T1552.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 22, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.2.0 <=7.2.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Fortinet · FortiOSversion=7.2.0 <=7.2.5
Fortinet · FortiProxyversion=7.0.0 <=7.0.10; version=7.2.0 <=7.2.1

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
3.3Fortinet, Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
T1552.001Credentials In Files

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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