How severe is CVE-2021-43685?

CVE-2021-43685 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-2021-43685 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-43685?

CVE-2021-43685 affects Libretime Libretime Hv. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-43685?

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-2021-43685 published?

CVE-2021-43685 was published on 2021-12-01 and last updated on 2026-06-17.

CVE-2021-43685

CVE-2021-43685 is a critical-severity vulnerability in Libretime Libretime Hv with a CVSS 3.x base score of 9.8. 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-610.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-610
Affected product: Libretime Libretime Hv
Published: 2021-12-01
Last modified: 2026-06-17

Description

libretime hv3.0.0-alpha.10 is affected by a path manipulation vulnerability in /blob/master/legacy/application/modules/rest/controllers/ShowImageController.php through the rename function.

Frequently asked questions

What is CVE-2021-43685?: libretime hv3.0.0-alpha.10 is affected by a path manipulation vulnerability in /blob/master/legacy/application/modules/rest/controllers/ShowImageController.php through the rename function.
How severe is CVE-2021-43685?: CVE-2021-43685 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-2021-43685 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-43685?: CVE-2021-43685 affects Libretime Libretime Hv. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-43685?: 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-2021-43685 published?: CVE-2021-43685 was published on 2021-12-01 and last updated on 2026-06-17.

References

https://github.com/LibreTime/libretime/issues/1437

Affected products (1)

cpe:2.3:a:libretime:libretime_hv:3.0.0:alpha.10:*:*:*:*:*:*

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