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Fencer Vulns
medium 6.4

CVE-2023-23781 json

A stack-based buffer overflow vulnerability [CWE-121] in FortiWeb version 7.0.1 and below, 6.4 all versions, version 6.3.19 and below SAML…

published 2023-02-16 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-27867

cvss
6.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits
0
none known

Summary

A stack-based buffer overflow vulnerability [CWE-121] in FortiWeb version 7.0.1 and below, 6.4 all versions, version 6.3.19 and below SAML server configuration may allow an authenticated attacker to achieve arbitrary code execution via specifically crafted XML files.

Patch / fix

  • fortinet fortiweb 6.3.20, 7.0.2

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

0.70% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.1 CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C
CNA 3.1 6.4 CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Fortinet FortiWeb

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.