How severe is CVE-2021-44080?

CVE-2021-44080 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-44080 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 24% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-44080?

CVE-2021-44080 affects Sercomm H500s Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-44080?

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-2021-44080 published?

CVE-2021-44080 was published on 2022-06-02 and last updated on 2026-06-17.

CVE-2021-44080

CVE-2021-44080 is a high-severity vulnerability in Sercomm H500s Firmware with a CVSS 3.x base score of 7.2. Its EPSS exploit-prediction score of 24% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 9.0
EPSS exploit prediction: 24% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Sercomm H500s Firmware
Published: 2022-06-02
Last modified: 2026-06-17

Description

A Command Injection vulnerability in httpd web server (setup.cgi) in SerComm h500s, FW: lowi-h500s-v3.4.22 allows logged in administrators to arbitrary OS commands as root in the device via the connection_type parameter of the statussupport_diagnostic_tracing.json endpoint.

Frequently asked questions

What is CVE-2021-44080?: A Command Injection vulnerability in httpd web server (setup.cgi) in SerComm h500s, FW: lowi-h500s-v3.4.22 allows logged in administrators to arbitrary OS commands as root in the device via the connection_type parameter of the statussupport_diagnostic_tracing.json endpoint.
How severe is CVE-2021-44080?: CVE-2021-44080 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-44080 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 24% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-44080?: CVE-2021-44080 affects Sercomm H500s Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-44080?: 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-2021-44080 published?: CVE-2021-44080 was published on 2022-06-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:sercomm:h500s_firmware:lowi-h500s-v3.4.22:*:*:*:*:*:*:*

Other CWE-78 (OS Command Injection) vulnerabilities

CVE-2026-56004 — Critical (CVSS 10.0): A shellcode injection in the mercurial handler of the obs tar_scm source service before version 0.12.4 could be used by…
CVE-2026-56415 — Critical (CVSS 10.0): Storage Concentrator (SC & SCVM) contains a command injection vulnerability within the debug.pl script that is…
CVE-2026-56413 — Critical (CVSS 10.0): Storage Concentrator (SC & SCVM) contains a command injection vulnerability in the ms_service.pl service, which listens…
CVE-2026-49869 — Critical (CVSS 10.0): Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, AuthenticationFilter in…
CVE-2026-49261 — Critical (CVSS 10.0): MariaDB server is a community developed fork of MySQL server. Versions 10.6.1 through 10.6.26, 10.11.1 through…
CVE-2026-10520 — Critical (CVSS 10.0): An OS Command Injection vulnerability in Ivanti Sentry before the R10.5.2, R10.6.2 and R10.7.1 versions allows a…

Browse all CWE-78 (OS Command Injection) vulnerabilities →