CVE-2023-6764
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2023
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
A format string vulnerability in a function of the IPSec VPN feature in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50(W) series firmware versions from 4.16 through 5.37 Patch 1, and USG20(W)-VPN series firmware versions from 4.16 through 5.37 Patch 1 could allow an attacker to achieve unauthorized remote code execution by sending a sequence of specially crafted payloads containing an invalid pointer; however, such an attack would require detailed knowledge of an affected device’s memory layout and configuration.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
ATP series firmware
- Vendor
- Zyxel
- Product
- ATP series firmware
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| version 4.32 through 5.37 Patch 1 | affected | Unavailable | Unavailable | Unavailable | None listed |
USG FLEX series firmware
- Vendor
- Zyxel
- Product
- USG FLEX series firmware
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| version 4.50 through 5.37 Patch 1 | affected | Unavailable | Unavailable | Unavailable | None listed |
USG FLEX 50(W) series firmware
- Vendor
- Zyxel
- Product
- USG FLEX 50(W) series firmware
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| version 4.16 through 5.37 Patch 1 | affected | Unavailable | Unavailable | Unavailable | None listed |
USG20(W)-VPN series firmware
- Vendor
- Zyxel
- Product
- USG20(W)-VPN series firmware
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| version 4.16 through 5.37 Patch 1 | affected | Unavailable | Unavailable | Unavailable | None listed |