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CVE-2023-22917

HIGHCVSS 7.5/10EPSS 0.88%

Last modified

CVE-2023-22917 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A buffer overflow vulnerability in the “sdwan_iface_ipc” binary of Zyxel ATP series firmware versions 5.10 through 5.32, USG FLEX series firmware versions 5.00 through 5.32, USG FLEX 50(W) firmware versions 5.10 through 5.32, USG20(W)-VPN firmware versions 5.10 through 5.32, and VPN series firmware versions 5.00 through 5.35, which could allow a remote unauthenticated attacker to cause a core dump with a request error message on a vulnerable device by uploading a crafted configuration file.. EPSS estimates a 0.88% chance of exploitation in the next 30 days.

Description

A buffer overflow vulnerability in the “sdwan_iface_ipc” binary of Zyxel ATP series firmware versions 5.10 through 5.32, USG FLEX series firmware versions 5.00 through 5.32, USG FLEX 50(W) firmware versions 5.10 through 5.32, USG20(W)-VPN firmware versions 5.10 through 5.32, and VPN series firmware versions 5.00 through 5.35, which could allow a remote unauthenticated attacker to cause a core dump with a request error message on a vulnerable device by uploading a crafted configuration file.

Metrics

CVSS 3.1
7.5/10

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

EPSS Probability
0.88%

54.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
ZyxelUsg Flex 100 Firmware>= 5.00, <= 5.32
ZyxelUsg Flex 100w Firmware>= 5.00, <= 5.32
ZyxelUsg Flex 200 Firmware>= 5.00, <= 5.32
ZyxelUsg Flex 50 Firmware>= 5.00, <= 5.32
ZyxelUsg Flex 50w Firmware>= 5.10, <= 5.32
ZyxelUsg Flex 500 Firmware>= 5.00, <= 5.32
ZyxelUsg Flex 700 Firmware>= 5.00, <= 5.32
ZyxelVpn100 Firmware>= 5.00, <= 5.35
ZyxelVpn1000 Firmware>= 5.00, <= 5.35
ZyxelVpn300 Firmware>= 5.00, <= 5.35
ZyxelVpn50 Firmware>= 5.00, <= 5.35
ZyxelUsg 20w-Vpn Firmware>= 5.10, <= 5.32
ZyxelAtp100 Firmware>= 5.10, <= 5.32
ZyxelAtp100w Firmware>= 5.10, <= 5.32
ZyxelAtp200 Firmware>= 5.10, <= 5.32
ZyxelAtp500 Firmware>= 5.10, <= 5.32
ZyxelAtp700 Firmware>= 5.10, <= 5.32
ZyxelAtp800 Firmware>= 5.10, <= 5.32

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2023-22917?
A buffer overflow vulnerability in the “sdwan_iface_ipc” binary of Zyxel ATP series firmware versions 5.10 through 5.32, USG FLEX series firmware versions 5.00 through 5.32, USG FLEX 50(W) firmware versions 5.10 through 5.32, USG20(W)-VPN firmware versions 5.10 through 5.32, and VPN series firmware versions 5.00 through 5.35, which could allow a remote unauthenticated attacker to cause a core dump with a request error message on a vulnerable device by uploading a crafted configuration file.
How severe is CVE-2023-22917?
CVE-2023-22917 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.88% probability of exploitation in the next 30 days.
How do I fix CVE-2023-22917?
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-2023-22917?

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

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Source: NVD / NIST