vulnerability

CVE-2020-25078

7.5

High

KEV · Exploited in wildEPSS 98%Patch available

An issue was discovered on D-Link DCS-2530L before 1.06.01 Hotfix and DCS-2670L through 2.02 devices. The unauthenticated /config/getuser endpoint allows for remote administrator password disclosure.

exploited

Yes, in CISA KEV since 5 Aug 2025fix by 26 Aug 2025 (CISA deadline for US federal agencies)unvetted proof-of-concept code on github

fix

Patch available see the advisory in the references

likelihood

EPSS 97.5%

Published 2 Sept 2020Analysed here 2 Nov 2026CVSS scored by CISA

do firstApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

triage

surface unknownruntimeWAF can block: partlyAV · network

Can a WAF block it? Partly. The vulnerability is triggered by unauthenticated HTTP requests to a specific endpoint that discloses administrator passwords. A WAF can block or monitor requests to this endpoint that do not come from authorized users. A WAF rule can match requests to the /config/getuser endpoint without authentication. No tracked WAF vendor has published a rule for this CVE yet, so you would write it yourself.

What a custom rule would match: requests to the /config/getuser endpoint without authentication

Also consider: patch · custom WAF rule

Based on an AI reading of the CVE description, and no vendor rule found yet. We check Cloudflare, AWS, Google Cloud Armor and Azure; for Akamai, Imperva, Fastly, F5, ask your vendor.

cvss vector

attack vectornetworkattack complexitylowprivileges requirednoneuser interactionnonescopeunchangedconfidentialityhighintegritynoneavailabilitynone

CVSS 3.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

common questions

Is CVE-2020-25078 being exploited?

Yes. CVE-2020-25078 appears in CISA's Known Exploited Vulnerabilities catalog, which means exploitation in the wild has been confirmed and reported. Treat it as active rather than theoretical, and patch it ahead of higher-scoring vulnerabilities that carry no exploitation evidence.

How severe is CVE-2020-25078?

CVE-2020-25078 is rated High with a CVSS score of 7.5. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.

Is there a patch for CVE-2020-25078?

Yes. A fix has been recorded for CVE-2020-25078. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.

What does CVE-2020-25078 affect?

CVE-2020-25078 affects dlink:dcs-4603_firmware, dlink:dcs-4622_firmware, dlink:dcs-4701e_firmware, dlink:dcs-4703e_firmware, and 5 further products or versions. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.

Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.

executive summary

technical analysis

affected

dlink:dcs-4603_firmwaredlink:dcs-4622_firmwaredlink:dcs-4701e_firmwaredlink:dcs-4703e_firmwaredlink:dcs-4705e_firmwaredlink:dcs-4802e_firmwaredlink:dcs-p703_firmwaredlink:dcs-2530l_firmwaredlink:dcs-2670l_firmware

public exploits

Unvetted proof-of-concept code on GitHub: 3 GitHub proofs of concept · 1 Nuclei template

Nuclei

D-Link DCS-2530L/DCS-2670L - Administrator Password Disclosure · detection template · high

GitHub proofs of concept

Listed so you can judge urgency, not as a recommendation to run anything. GitHub “proofs of concept” are unvetted: some are fake or carry malware. Exploit-DB marks the entries its staff verified.

cisa ssvc

exploitation: active
automatable: yes
technical impact: partial

Assessed by CISA 5 Aug 2025 (SSVC 2.0.3).

timeline

2 Sept 2020Published
30 Mar 2021First proof-of-concept repository on GitHub (unvetted) · 208 days (about 7 months) later
5 Aug 2025Added to CISA KEV (exploited in the wild) · 1,589 days (about 4 years) later
5 Aug 2025CISA SSVC assessment: exploitation active · same day later
26 Aug 2025CISA remediation due date (US federal agencies) · 21 days later
21 Oct 2025CVE record last updated · 57 days later
2 Nov 2026Analysed by vulneraibility.com · 377 days (about 1 year) later

how to fix

Remediation steps are tailored for users whose stack is affected. Add this technology to your stack to see the fix checklist.

references

NVD CVE.org CVE Details Source

4 references in the CVE record: 4 links

Linksupportannouncement.us.dlink.com /announcement/publication.aspx?name=SAP10180
Linktwitter.com /Dogonsecurity/status/1273251236167516161
Linksupport.dlink.com /productinfo.aspx?m=DCS-2530L
Linkcisa.gov /known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-25078

sources

CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
NVD: CVSS and CPE data
CISA KEV catalog: exploitation, date added, due date
CISA Vulnrichment (ADP): SSVC decision points
FIRST EPSS: exploit probability and percentile
Nuclei templates: detection templates
PoC-in-GitHub: GitHub repositories that claim a proof of concept
Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.

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