How severe is CVE-2020-11967?

CVE-2020-11967 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-2020-11967 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-11967?

CVE-2020-11967 affects Evenroute Iqrouter Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-11967?

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-2020-11967 published?

CVE-2020-11967 was published on 2020-04-21 and last updated on 2026-06-17.

CVE-2020-11967

CVE-2020-11967 is a critical-severity vulnerability in Evenroute Iqrouter Firmware 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-862.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 9.0
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Evenroute Iqrouter Firmware
Published: 2020-04-21
Last modified: 2026-06-17

Description

In IQrouter through 3.3.1, remote attackers can control the device (restart network, reboot, upgrade, reset) because of Incorrect Access Control. Note: The vendor claims that this vulnerability can only occur on a brand-new network that, after initiating the forced initial configuration (which has a required step for setting a secure password on the system), makes this CVE invalid. This vulnerability is “true for any unconfigured release of OpenWRT, and true of many other new Linux distros prior to being configured for the first time”

Frequently asked questions

What is CVE-2020-11967?: In IQrouter through 3.3.1, remote attackers can control the device (restart network, reboot, upgrade, reset) because of Incorrect Access Control. Note: The vendor claims that this vulnerability can only occur on a brand-new network that, after initiating the forced initial configuration (which has a required step for setting a secure password on the system), makes this CVE invalid. This vulnerability is “true for any unconfigured release of OpenWRT, and true of many other new Linux distros prior to being configured for the first time”
How severe is CVE-2020-11967?: CVE-2020-11967 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-2020-11967 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-11967?: CVE-2020-11967 affects Evenroute Iqrouter Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-11967?: 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-2020-11967 published?: CVE-2020-11967 was published on 2020-04-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:evenroute:iqrouter_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Evenroute Iqrouter Firmware

CVE-2020-11966 — Critical (CVSS 9.8): In IQrouter through 3.3.1, the Lua function reset_password in the web-panel allows remote attackers to change the root…
CVE-2020-11965 — Critical (CVSS 9.8): In IQrouter through 3.3.1, there is a root user without a password, which allows attackers to gain full remote access…
CVE-2020-11963 — Critical (CVSS 9.8): IQrouter through 3.3.1, when unconfigured, has multiple remote code execution vulnerabilities in the web-panel because…
CVE-2020-11968 — High (CVSS 7.5): In the web-panel in IQrouter through 3.3.1, remote attackers can read system logs because of Incorrect Access Control.…
CVE-2020-11964 — High (CVSS 7.5): In IQrouter through 3.3.1, the Lua function diag_set_password in the web-panel allows remote attackers to change the…

All CVEs affecting Evenroute Iqrouter Firmware →

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