CVE-2023-26208
A improper restriction of excessive authentication attempts vulnerability [CWE-307] in Fortinet FortiAuthenticator 6.4.x and before allows a remote unauthenticated attacker to partially exhaust CPU
02 Description
A improper restriction of excessive authentication attempts vulnerability [CWE-307] in Fortinet FortiAuthenticator 6.4.x and before allows a remote unauthenticated attacker to partially exhaust CPU
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.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 1.81% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 78.2% of scored records. A rank, not a probability.
- NVD base score
- 5.3 (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:N/I:N/A:L
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- 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
- 2023-03-09 14:55Z3 YR AGO
- Last updated
- 2024-10-22 20:47Z2 YR AGO
- Reserved
- 2023-02-20
- Assigning CNA
- fortinet
- Record state
- PUBLISHED
- Severity
- Low (CVSS 3.5)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:X
- Weaknesses
- CWE-307Improper Restriction of Excessive Authentication AttemptsBase
- Data version
- 5.1
- Document digest
- 44c902ac61d33ecc68102fc15aafbd256252d775cd340ef1d1f41302b2197acc
05 Affected products
06 References
- fortiguard.comhttps://fortiguard.com/psirt/FG-IR-20-078
07 Remediation
Please upgrade to FortiAuthenticator version 6.5.0 or above, Please upgrade to FortiDeceptor version 3.2.0 or above. Please upgrade to FortiMail version 6.4.1 or above, Please upgrade to FortiMail version 6.2.5 or above, Please upgrade to FortiMail version 6.0.10 or above.