How severe is CVE-2023-53924?

CVE-2023-53924 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-53924 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-53924?

CVE-2023-53924 affects Ulicms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-53924?

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-2023-53924 have an EU (EUVD) identifier?

Yes. CVE-2023-53924 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-60207.

When was CVE-2023-53924 published?

CVE-2023-53924 was published on 2025-12-17 and last updated on 2026-06-17.

CVE-2023-53924

CVE-2023-53924 is a high-severity vulnerability in Ulicms with a CVSS 3.x base score of 8.8. 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-434.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 8.7
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-60207
Weakness: CWE-434
Affected product: Ulicms
Published: 2025-12-17
Last modified: 2026-06-17

Description

UliCMS 2023.1-sniffing-vicuna contains a remote code execution vulnerability that allows authenticated attackers to upload PHP files with .phar extension during profile avatar upload. Attackers can trigger code execution by visiting the uploaded file's location, enabling system command execution through maliciously crafted avatar uploads.

Frequently asked questions

What is CVE-2023-53924?: UliCMS 2023.1-sniffing-vicuna contains a remote code execution vulnerability that allows authenticated attackers to upload PHP files with .phar extension during profile avatar upload. Attackers can trigger code execution by visiting the uploaded file's location, enabling system command execution through maliciously crafted avatar uploads.
How severe is CVE-2023-53924?: CVE-2023-53924 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-53924 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-53924?: CVE-2023-53924 affects Ulicms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-53924?: 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-2023-53924 have an EU (EUVD) identifier?: Yes. CVE-2023-53924 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-60207.
When was CVE-2023-53924 published?: CVE-2023-53924 was published on 2025-12-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ulicms:ulicms:2023.1:*:*:*:*:*:*:*

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