How severe is CVE-2021-27702?

CVE-2021-27702 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2021-27702 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2021-27702?

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-2021-27702 have an EU (EUVD) identifier?

Yes. CVE-2021-27702 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-14444.

When was CVE-2021-27702 published?

CVE-2021-27702 was published on 2024-11-12 and last updated on 2026-06-17.

CVE-2021-27702

CVE-2021-27702 is a high-severity vulnerability with a CVSS 3.x base score of 7.3. 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-77.

Key facts

Severity: High (CVSS 3.x base score 7.3)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2021-14444
Weakness: CWE-77
Published: 2024-11-12
Last modified: 2026-06-17

Description

Sercomm Router Etisalat Model S3- AC2100 is affected by Incorrect Access Control via the diagnostic utility in the router dashboard.

Frequently asked questions

What is CVE-2021-27702?: Sercomm Router Etisalat Model S3- AC2100 is affected by Incorrect Access Control via the diagnostic utility in the router dashboard.
How severe is CVE-2021-27702?: CVE-2021-27702 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2021-27702 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2021-27702?: 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-2021-27702 have an EU (EUVD) identifier?: Yes. CVE-2021-27702 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-14444.
When was CVE-2021-27702 published?: CVE-2021-27702 was published on 2024-11-12 and last updated on 2026-06-17.

References

https://github.com/Mrnmap/mrnmap-cve/blob/main/CVE-2021-27702

Other CWE-77 (Command Injection) vulnerabilities

CVE-2026-23652 — Critical (CVSS 10.0): Improper neutralization of special elements used in a command ('command injection') in Microsoft Power Pages allows an…
CVE-2025-59818 — Critical (CVSS 10.0): This vulnerability allows authenticated attackers to execute arbitrary commands on the underlying system using the file…
CVE-2025-64093 — Critical (CVSS 10.0): Remote Code Execution vulnerability that allows unauthenticated attackers to inject arbitrary commands into the…
CVE-2025-64090 — Critical (CVSS 10.0): This vulnerability allows authenticated attackers to execute commands via the hostname of the device.
CVE-2025-61492 — Critical (CVSS 10.0): A command injection vulnerability in the execute_command function of terminal-controller-mcp 0.1.7 allows attackers to…
CVE-2025-10035 — Critical (CVSS 10.0): A deserialization vulnerability in the License Servlet of Fortra's GoAnywhere MFT allows an actor with a validly forged…

Browse all CWE-77 (Command Injection) vulnerabilities →