CVE-2023-40830

CRITICALNVD 9.89.8—

9.8

Tenda AC6 v15.03.05.19 is vulnerable to Buffer Overflow as the Index parameter does not verify the length.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 30.6%
KEV: Not listed

Published

October 3, 2023

Last Modified

June 17, 2025

Advisory Details (1)

Auto-updated May 27, 2026

No patch confirmed yet.

generic

CVE/CVE-2023-40830 at main · BugAlice01/CVE · GitHub

https://github.com/BugAlice01/CVE/tree/main/CVE-2023-40830

Weakness Classification(1)

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

CWE-120Buffer Copy without Checking Size (Classic Buffer Overflow)

Data Freshness Timeline

(refreshed 17× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-06 13:46 UTCepss_batch
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Frequently asked(5)

What is CVE-2023-40830?

CVE-2023-40830 is a critical vulnerability published on October 3, 2023. Tenda AC6 v15.03.05.19 is vulnerable to Buffer Overflow as the Index parameter does not verify the length.

When was CVE-2023-40830 disclosed?

CVE-2023-40830 was first published in the National Vulnerability Database on October 3, 2023, with the most recent update on June 17, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-40830 actively exploited?

CVE-2023-40830 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 30.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-40830?

CVE-2023-40830 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2023-40830?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-40830, 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.

Dependency Blast Radius

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CVE-2023-40830

📅 Published

🔄 Last Modified

📋 Advisory Details (1)

CVE/CVE-2023-40830 at main · BugAlice01/CVE · GitHub

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-40830?

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Advisory Details (1)

Frequently asked(5)

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