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,
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.
- 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
- CWE-787Out-of-bounds WriteBase
- Data version
- 5.2
- Document digest
- 389dc2d406c0319de65652a65ef318b40c22788164760f48fc2c231c97e27725
05 Affected products
06 References
- fortiguard.comhttps://fortiguard.com/psirt/FG-IR-23-328
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