How severe is CVE-2021-43970?

CVE-2021-43970 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-2021-43970 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-43970?

CVE-2021-43970 affects Quicklert. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-43970?

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.

When was CVE-2021-43970 published?

CVE-2021-43970 was published on 2022-03-10 and last updated on 2026-06-17.

CVE-2021-43970

CVE-2021-43970 is a high-severity vulnerability in Quicklert 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 v2: 9.0
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Quicklert
Published: 2022-03-10
Last modified: 2026-06-17

Description

An arbitrary file upload vulnerability exists in albumimages.jsp in Quicklert for Digium 10.0.0 (1043) via a .mp3;.jsp filename for a file that begins with audio data bytes. It allows an authenticated (low privileged) attacker to execute remote code on the target server within the context of application's permissions (SYSTEM).

Frequently asked questions

What is CVE-2021-43970?: An arbitrary file upload vulnerability exists in albumimages.jsp in Quicklert for Digium 10.0.0 (1043) via a .mp3;.jsp filename for a file that begins with audio data bytes. It allows an authenticated (low privileged) attacker to execute remote code on the target server within the context of application's permissions (SYSTEM).
How severe is CVE-2021-43970?: CVE-2021-43970 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-2021-43970 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-43970?: CVE-2021-43970 affects Quicklert. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-43970?: 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.
When was CVE-2021-43970 published?: CVE-2021-43970 was published on 2022-03-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:quicklert:quicklert:10.0.0:-:*:*:*:*:digium_switchvox:*

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