CVE-2022-43621

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2023-03-29. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 8.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-1935 1.03 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of HNAP login requests. The issue results from an incorrectly implemented comparison. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-16152.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
—
EPSS
80.4%
KEV
Not listed

Published

March 29, 2023

Last Modified

November 21, 2024

References (4)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 38× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-22 23:02 UTCEG score recompute
  2. 2026-07-22 14:06 UTCEPSS rescore
  3. 2026-07-21 15:23 UTCEPSS rescore
  4. 2026-07-21 15:23 UTCEPSS rescore
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  1. 2026-07-01 15:04 UTCEPSS rescore
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  43. 2026-06-05 06:09 UTCEPSS rescore
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  45. 2026-06-04 13:11 UTCEPSS rescore
  46. 2026-06-02 20:12 UTCEPSS rescore
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  48. 2026-06-01 13:50 UTCEPSS rescore
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  50. 2026-05-31 22:29 UTCEPSS rescore
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  52. 2026-05-31 00:15 UTCEPSS rescore
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  54. 2026-05-29 13:43 UTCEPSS rescore
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  57. 2026-05-27 13:39 UTCEPSS rescore
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  62. 2026-05-26 07:17 UTCEPSS rescore
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  64. 2026-05-26 07:17 UTCEPSS rescore
  65. 2026-05-25 04:08 UTCEG score recompute
  66. 2026-05-25 04:08 UTCGHSA enrichment
  67. 2026-05-24 18:12 UTCOSV refresh

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Frequently asked(5)

What is CVE-2022-43621?
CVE-2022-43621 is a high vulnerability published on March 29, 2023. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-1935 1.03 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of HNAP login requests. The issue results from an…
When was CVE-2022-43621 disclosed?
CVE-2022-43621 was first published in the National Vulnerability Database on March 29, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-43621 actively exploited?
CVE-2022-43621 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 80.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-43621?
CVE-2022-43621 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2022-43621?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-43621, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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