CVE-2022-32548

CRITICALNVD 10.09.8▼Elevated

10.0

An issue was discovered on certain DrayTek Vigor routers before July 2022 such as the Vigor3910 before 4.3.1.1. /cgi-bin/wlogin.cgi has a buffer overflow via the username or password to the aa or ab field.

CVSS v3: 10.0
EG Score: 9.8(medium)
EPSS: 98.5%
KEV: Not listed

Published

August 29, 2022

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated May 23, 2026

⚠️ Active exploitation confirmed. No patch confirmed yet.

generic🔴 Active Exploitation

SMBs Exposed to Attacks by Critical Vulnerability in DrayTek Vigor Routers - SecurityWeek

https://www.securityweek.com/smbs-exposed-attacks-critical-vulnerability-draytek-vigor-routers

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 11× 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.

2026-06-05 06:09 UTCepss_batch
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2026-06-04 13:11 UTCepss_batch
2026-06-04 13:11 UTCepss_batch
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2026-06-01 13:50 UTCepss_batch
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2026-05-31 00:15 UTCepss_batch
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2026-05-29 13:43 UTCepss_batch
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2026-05-26 07:17 UTCepss_batch

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

GitHub PoCMosaedH/CVE-2022-32548-RCE-POC
First seen Oct 27, 2023
Open source ↗

Frequently asked(5)

What is CVE-2022-32548?

CVE-2022-32548 is a critical vulnerability published on August 29, 2022. An issue was discovered on certain DrayTek Vigor routers before July 2022 such as the Vigor3910 before 4.3.1.1. /cgi-bin/wlogin.cgi has a buffer overflow via the username or password to the aa or ab field.

When was CVE-2022-32548 disclosed?

CVE-2022-32548 was first published in the National Vulnerability Database on August 29, 2022, 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-2022-32548 actively exploited?

CVE-2022-32548 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2022-32548?

CVE-2022-32548 has a CVSS v3 base score of 10.0 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.8.

How do I remediate CVE-2022-32548?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-32548, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2022-32548

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CVE-2022-32548

📅 Published

🔄 Last Modified

📋 Advisory Details (1)