How severe is CVE-2023-38551?

CVE-2023-38551 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability high.

Is CVE-2023-38551 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2023-38551?

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

Does CVE-2023-38551 have an EU (EUVD) identifier?

Yes. CVE-2023-38551 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-42350.

When was CVE-2023-38551 published?

CVE-2023-38551 was published on 2024-05-31 and last updated on 2026-06-17.

CVE-2023-38551

CVE-2023-38551 is a high-severity vulnerability with a CVSS 3.x base score of 8.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-93.

Key facts

Severity: High (CVSS 3.x base score 8.2)
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-42350
Weakness: CWE-93
Published: 2024-05-31
Last modified: 2026-06-17

Description

A CRLF Injection vulnerability in Ivanti Connect Secure (9.x, 22.x) allows an authenticated high-privileged user to inject malicious code on a victim’s browser, thereby leading to cross-site scripting attack.

Frequently asked questions

What is CVE-2023-38551?: A CRLF Injection vulnerability in Ivanti Connect Secure (9.x, 22.x) allows an authenticated high-privileged user to inject malicious code on a victim’s browser, thereby leading to cross-site scripting attack.
How severe is CVE-2023-38551?: CVE-2023-38551 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability high.
Is CVE-2023-38551 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2023-38551?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2023-38551 have an EU (EUVD) identifier?: Yes. CVE-2023-38551 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-42350.
When was CVE-2023-38551 published?: CVE-2023-38551 was published on 2024-05-31 and last updated on 2026-06-17.

References

https://forums.ivanti.com/s/article/Security-Advisory-May-2024

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