CVE-2022-43391: zyxel ax7501-b0_firmware Classic Buffer Overflow
CVSS: 6.5v3.1MediumModified
Published 11-01-2023Last modified 15-10-2024
Vulnerability summary
CVE-2022-43391 is a medium (CVSS 6.5) Classic Buffer Overflow vulnerability in zyxel ax7501-b0_firmware. EPSS estimates a 0.72% chance of exploitation in the next 30 days, higher than 53.1% of scored vulnerabilities.
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)EPSS score
0.72%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 11-01-2023PublishedVulnerability first disclosed.
- 15-10-2024Last modifiedVulnerability information updated.
Description
A buffer overflow vulnerability in the parameter of the CGI program in Zyxel NR7101 firmware prior to V1.15(ACCC.3)C0, which could allow an authenticated attacker to cause denial-of-service (DoS) conditions by sending a crafted HTTP request.
CVSS metrics
2 scores · 2 sources · 1 versionMedium 6.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HSourcesAll 2 agree
- NVDNIST6.5MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.72%
Chance of exploitation in the next 30 days
Percentile
53%
Versus all other CVEs
30-day change
0.00 pp
From 0.72% on 20-09-2026
20-09-202620-10-2026
EPSS score0.72%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Zyxel49 products
- ax7501-b0_firmwarena
- dx3301-t0_firmwarena
- dx4510-b1_firmwarena
- dx5401-b0_firmwarena
- emg3525-t50b_firmwarena
1 vendor · 49 products
References
1 links- www.zyxel.com/global/…Vendor Advisory