How severe is CVE-2021-20623?

CVE-2021-20623 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-2021-20623 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-20623?

CVE-2021-20623 affects Panasonic Video Insight Vms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-20623?

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-2021-20623 published?

CVE-2021-20623 was published on 2021-02-05 and last updated on 2026-06-17.

CVE-2021-20623

CVE-2021-20623 is a critical-severity vulnerability in Panasonic Video Insight Vms 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-319.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-319
Affected product: Panasonic Video Insight Vms
Published: 2021-02-05
Last modified: 2026-06-17

Description

Video Insight VMS versions prior to 7.8 allows a remote attacker to execute arbitrary code with the system user privilege by sending a specially crafted request.

Frequently asked questions

What is CVE-2021-20623?: Video Insight VMS versions prior to 7.8 allows a remote attacker to execute arbitrary code with the system user privilege by sending a specially crafted request.
How severe is CVE-2021-20623?: CVE-2021-20623 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-2021-20623 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-20623?: CVE-2021-20623 affects Panasonic Video Insight Vms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-20623?: 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-2021-20623 published?: CVE-2021-20623 was published on 2021-02-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:panasonic:video_insight_vms:*:*:*:*:*:*:*:*

Other CWE-319 (Cleartext Transmission of Sensitive Information) vulnerabilities

CVE-2025-4378 — Critical (CVSS 10.0): Cleartext Transmission of Sensitive Information, Use of Hard-coded Credentials vulnerability in Ataturk University…
CVE-2025-47419 — Critical (CVSS 10.0): Cleartext Transmission of Sensitive Information vulnerability in Crestron Automate VX allows Sniffing Network…
CVE-2026-48902 — Critical (CVSS 9.8): The password and username reset features created plain http links for https connections if the "Force SSL" flag wasn't…
CVE-2025-34271 — Critical (CVSS 9.8): Nagios Log Server versions prior to 2024R2.0.2 contain a vulnerability in the cluster manager component when…
CVE-2025-32880 — Critical (CVSS 9.8): An issue was discovered on COROS PACE 3 devices through 3.0808.0. It implements a function to connect the watch to a…
CVE-2025-26199 — Critical (CVSS 9.8): CloudClassroom-PHP-Project v1.0 is affected by an insecure credential transmission vulnerability. The application…

Browse all CWE-319 (Cleartext Transmission of Sensitive Information) vulnerabilities →