How severe is CVE-2023-34991?

CVE-2023-34991 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-34991 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 29% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-34991?

CVE-2023-34991 primarily affects Fortinet Fortiwlm. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-34991?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-34991 published?

CVE-2023-34991 was published on 2023-11-14 and last updated on 2026-06-17.

CVE-2023-34991

CVE-2023-34991 is a critical-severity vulnerability in Fortinet Fortiwlm with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 29% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-89.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 29% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Fortinet Fortiwlm
Published: 2023-11-14
Last modified: 2026-06-17

Description

A improper neutralization of special elements used in an sql command ('sql injection') in Fortinet FortiWLM version 8.6.0 through 8.6.5 and 8.5.0 through 8.5.4 and 8.4.0 through 8.4.2 and 8.3.0 through 8.3.2 and 8.2.2 allows attacker to execute unauthorized code or commands via a crafted http request.

Frequently asked questions

What is CVE-2023-34991?: A improper neutralization of special elements used in an sql command ('sql injection') in Fortinet FortiWLM version 8.6.0 through 8.6.5 and 8.5.0 through 8.5.4 and 8.4.0 through 8.4.2 and 8.3.0 through 8.3.2 and 8.2.2 allows attacker to execute unauthorized code or commands via a crafted http request.
How severe is CVE-2023-34991?: CVE-2023-34991 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-34991 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 29% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-34991?: CVE-2023-34991 primarily affects Fortinet Fortiwlm. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-34991?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-34991 published?: CVE-2023-34991 was published on 2023-11-14 and last updated on 2026-06-17.

References

https://fortiguard.com/psirt/FG-IR-23-142

Affected products (8)

cpe:2.3:a:fortinet:fortiwlm:*:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiwlm:8.2.2:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiwlm:8.3.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiwlm:8.3.1:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiwlm:8.3.2:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiwlm:8.4.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiwlm:8.4.1:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiwlm:8.4.2:*:*:*:*:*:*:*

More vulnerabilities in Fortinet Fortiwlm

CVE-2023-34990 — Critical (CVSS 9.8): A relative path traversal in Fortinet FortiWLM version 8.6.0 through 8.6.5 and 8.5.0 through 8.5.4 allows attacker to…
CVE-2023-36550 — Critical (CVSS 9.8): A improper neutralization of special elements used in an os command ('os command injection') in Fortinet FortiWLM…
CVE-2023-36548 — Critical (CVSS 9.8): A improper neutralization of special elements used in an os command ('os command injection') in Fortinet FortiWLM…
CVE-2023-36547 — Critical (CVSS 9.8): A improper neutralization of special elements used in an os command ('os command injection') in Fortinet FortiWLM…
CVE-2023-34993 — Critical (CVSS 9.8): A improper neutralization of special elements used in an os command ('os command injection') in Fortinet FortiWLM…
CVE-2017-7336 — Critical (CVSS 9.8): A hard-coded account named 'upgrade' in Fortinet FortiWLM 8.3.0 and lower versions allows a remote attacker to log-in…

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