How severe is CVE-2025-28031?

CVE-2025-28031 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2025-28031 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-28031?

CVE-2025-28031 affects Totolink A810r Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-28031?

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

Does CVE-2025-28031 have an EU (EUVD) identifier?

Yes. CVE-2025-28031 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12272.

When was CVE-2025-28031 published?

CVE-2025-28031 was published on 2025-04-22 and last updated on 2026-06-17.

CVE-2025-28031

CVE-2025-28031 is a medium-severity vulnerability in Totolink A810r Firmware with a CVSS 3.x base score of 6.5. 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-259.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-12272
Weakness: CWE-259
Affected product: Totolink A810r Firmware
Published: 2025-04-22
Last modified: 2026-06-17

Description

TOTOLINK A810R V4.1.2cu.5182_B20201026 was discovered to contain a hardcoded password for the telnet service in product.ini.

Frequently asked questions

What is CVE-2025-28031?: TOTOLINK A810R V4.1.2cu.5182_B20201026 was discovered to contain a hardcoded password for the telnet service in product.ini.
How severe is CVE-2025-28031?: CVE-2025-28031 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2025-28031 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-28031?: CVE-2025-28031 affects Totolink A810r Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-28031?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-28031 have an EU (EUVD) identifier?: Yes. CVE-2025-28031 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12272.
When was CVE-2025-28031 published?: CVE-2025-28031 was published on 2025-04-22 and last updated on 2026-06-17.

References

https://locrian-lightning-dc7.notion.site/Hard-code-Password-19f8e5e2b1a2803f864afbbc4262152e?pvs=73

Affected products (1)

cpe:2.3:o:totolink:a810r_firmware:4.1.2cu.5182_b20201026:*:*:*:*:*:*:*

More vulnerabilities in Totolink A810r Firmware

CVE-2025-28036 — Critical (CVSS 9.8): TOTOLINK A950RG V4.1.2cu.5161_B20200903 was found to contain a pre-auth remote command execution vulnerability in the…
CVE-2025-28035 — Critical (CVSS 9.8): TOTOLINK A830R V4.1.2cu.5182_B20201102 was found to contain a pre-auth remote command execution vulnerability in the…
CVE-2025-28037 — Critical (CVSS 9.8): TOTOLINK A810R V4.1.2cu.5182_B20201026 and A950RG V4.1.2cu.5161_B20200903 were found to contain a pre-auth remote…
CVE-2025-28024 — Critical (CVSS 9.8): TOTOLINK A810R V4.1.2cu.5182_B20201026 was found to contain a buffer overflow vulnerability in the cstecgi.cgi
CVE-2025-28034 — Critical (CVSS 9.8): TOTOLINK A800R V4.1.2cu.5137_B20200730, A810R V4.1.2cu.5182_B20201026, A830R V4.1.2cu.5182_B20201102, A950RG…
CVE-2025-28137 — Critical (CVSS 9.8): The TOTOLINK A810R V4.1.2cu.5182_B20201026 were found to contain a pre-auth remote command execution vulnerability in…

All CVEs affecting Totolink A810r Firmware →

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