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01 Record

CVE-2023-42789

A out-of-bounds write vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2.0 through 7.2.5, FortiOS 7.0.0 through 7.0.12, FortiOS 6.4.0 through 6.4.14, FortiOS 6.2.0 through 6.2.15,

CriticalPUBLISHEDCNA: fortinet
CNA base score9.3 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

02 Description

A out-of-bounds write vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2.0 through 7.2.5, FortiOS 7.0.0 through 7.0.12, FortiOS 6.4.0 through 6.4.14, FortiOS 6.2.0 through 6.2.15,

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
3.30% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 88.1% of scored records. A rank, not a probability.
NVD base score
9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-07-08.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2024-03-12 15:09Z2 YR AGO
Last updated
2026-07-08 12:43Z3 MO AGO
Reserved
2023-09-14
Assigning CNA
fortinet
Record state
PUBLISHED
Severity
Critical (CVSS 9.3)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Weaknesses
Data version
5.2
Document digest
389dc2d406c0319de65652a65ef318b40c22788164760f48fc2c231c97e27725

05 Affected products

VendorProductVersionsPlatforms
FortinetFortiProxy7.4.0, 7.2.0 to 7.2.6, 7.0.0 to 7.0.12, 2.0.0 to 2.0.13—
FortinetFortiSASE23.2.b—
FortinetFortiOS7.4.0 to 7.4.1, 7.2.0 to 7.2.5, 7.0.0 to 7.0.12, 6.4.0 to 6.4.14, 6.2.0 to 6.2.15—
fortinetfortipam1.1.0 to 1.1.2, 1.0.0 to 1.0.3—

06 References

07 Remediation

Upgrade to FortiProxy version 7.4.1 or above Upgrade to FortiProxy version 7.2.7 or above Upgrade to FortiProxy version 7.0.13 or above Upgrade to FortiProxy version 2.0.14 or above Upgrade to FortiSwitchManager version 7.2.3 or above Upgrade to FortiSwitchManager version 7.0.3 or above Fortinet remediated this issue in FortiSASE version 23.3.b and hence customers do not need to perform any action. Upgrade to FortiOS version 7.4.2 or above Upgrade to FortiOS version 7.2.6 or above Upgrade to FortiOS version 7.0.13 or above Upgrade to FortiOS version 6.4.15 or above Upgrade to FortiOS version 6.2.16 or above Upgrade to FortiPAM version 1.2.0 or above