9.8

CVE-2023-49351: edimax br-6478ac_firmware Out-of-bounds Write

CVSS: 9.8v3.1CriticalModified
Published 16-01-2024Last modified 02-06-2025
Open JSON

Vulnerability summary

CVE-2023-49351 is a critical (CVSS 9.8) Out-of-bounds Write vulnerability in edimax br-6478ac_firmware. EPSS estimates a 0.57% chance of exploitation in the next 30 days, higher than 46.3% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.57%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 16-01-2024
    PublishedVulnerability first disclosed.
  2. 02-06-2025
    Last modifiedVulnerability information updated.

Description

A stack-based buffer overflow vulnerability in /bin/webs binary in Edimax BR6478AC V2 firmware veraion v1.23 allows attackers to overwrite other values located on the stack due to an incorrect use of the strcpy() function.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.57%

Chance of exploitation in the next 30 days

Percentile

46%

Versus all other CVEs

30-day change

0.00 pp

From 0.57% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.57%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Edimax1 product

1 vendor · 1 product

References

1 links