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CVE-2022-43389

CRITICALCVSS 9.8/10EPSS 0.61%

Last modified

CVE-2022-43389 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A buffer overflow vulnerability in the library of the web server in Zyxel NR7101 firmware prior to V1.15(ACCC.3)C0, which could allow an unauthenticated attacker to execute some OS commands or to cause denial-of-service (DoS) conditions on a vulnerable device.. EPSS estimates a 0.61% chance of exploitation in the next 30 days.

Description

A buffer overflow vulnerability in the library of the web server in Zyxel NR7101 firmware prior to V1.15(ACCC.3)C0, which could allow an unauthenticated attacker to execute some OS commands or to cause denial-of-service (DoS) conditions on a vulnerable device.

Metrics

CVSS 3.1
9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.61%

44.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
ZyxelLte3202-M437 Firmware< 1.00\(abwf.1\)c0
ZyxelLte3316-M604 Firmware< 2.00\(abmp.6\)c0
ZyxelLte7480-M804 Firmware< 1.00\(abra.6\)c0
ZyxelLte7490-M904 Firmware< 1.00\(abqy.5\)c0
ZyxelNebula Fwa510 Firmware< 1.15\(acgd.3\)c0
ZyxelNebula Fwa710 Firmware< 1.15\(acgc.3\)c0
ZyxelNebula Nr7101 Firmware< 1.15\(accc.3\)c0
ZyxelNr5103 Firmware< 4.19\(abyc.3\)c0
ZyxelNr5103e FirmwareAll versions
ZyxelNr7101 Firmware< 1.00\(abuv.7\)c0
ZyxelNr7102 Firmware< 1.00\(abyd.2\)c0
ZyxelNr7103 Firmware< 1.00\(accz.1\)c0
ZyxelEp240p FirmwareAll versions
ZyxelPm7320-B0 FirmwareAll versions
ZyxelPmg5317-T20b FirmwareAll versions
ZyxelPmg5617ga FirmwareAll versions
ZyxelPmg5622ga FirmwareAll versions

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2022-43389?
A buffer overflow vulnerability in the library of the web server in Zyxel NR7101 firmware prior to V1.15(ACCC.3)C0, which could allow an unauthenticated attacker to execute some OS commands or to cause denial-of-service (DoS) conditions on a vulnerable device.
How severe is CVE-2022-43389?
CVE-2022-43389 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.61% probability of exploitation in the next 30 days.
How do I fix CVE-2022-43389?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-43389?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST