How severe is CVE-2020-26567?

CVE-2020-26567 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-26567 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 17% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-26567?

CVE-2020-26567 affects Dlink Dsr-250n Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-26567?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-26567 published?

CVE-2020-26567 was published on 2020-10-08 and last updated on 2026-06-17.

CVE-2020-26567

CVE-2020-26567 is a medium-severity vulnerability in Dlink Dsr-250n Firmware with a CVSS 3.x base score of 5.5. Its EPSS exploit-prediction score of 17% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-306.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.9
EPSS exploit prediction: 17% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Dlink Dsr-250n Firmware
Published: 2020-10-08
Last modified: 2026-06-17

Description

An issue was discovered on D-Link DSR-250N before 3.17B devices. The CGI script upgradeStatusReboot.cgi can be accessed without authentication. Any access reboots the device, rendering it therefore unusable for several minutes.

Frequently asked questions

What is CVE-2020-26567?: An issue was discovered on D-Link DSR-250N before 3.17B devices. The CGI script upgradeStatusReboot.cgi can be accessed without authentication. Any access reboots the device, rendering it therefore unusable for several minutes.
How severe is CVE-2020-26567?: CVE-2020-26567 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-26567 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 17% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-26567?: CVE-2020-26567 affects Dlink Dsr-250n Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-26567?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-26567 published?: CVE-2020-26567 was published on 2020-10-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:dlink:dsr-250n_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Dlink Dsr-250n Firmware

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CVE-2020-25757 — High (CVSS 8.8): A lack of input validation and access controls in Lua CGIs on D-Link DSR VPN routers may result in arbitrary input…

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