CVE-2026-6643
Critical · 9.9CVSS
9.9
EPSS
0.8%
Published
Apr 20, 2026
CISA due date
—
The record
A stack-based buffer overflow vulnerability was found in the VPN Clients on the ADM. The issue stems from the use of unbounded sscanf() and passing user-controlled data directly to printf(). Due to the lack of PIE and Stack Canary protections, an authenticated remote attacker can exploit these to execute arbitrary code as the web server user. Affected products and versions include: from ADM 4.1.0 through ADM 4.3.3.RR42 as well as from ADM 5.0.0 through ADM 5.1.2.REO1.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
Related vulnerabilities
- CVE-2026-107705 Poppler 0.42.0 through 26.10.0 contains a stack-based buffer overflow in… CWE-121
- CVE-2026-95818 A stack-based buffer overflow in the dynamic loader (ld.so) of the GNU C Library (glibc)… CWE-121
- CVE-2026-61548 Rsyslog is a rocket-fast system for log processing. CWE-121
- CVE-2026-19774 BlueZ A2DP Stack-based Buffer Overflow Remote Code Execution Vulnerability. CWE-121
- CVE-2026-19542 Calling tdelete on a sufficiently deep tree in the GNU C Library version 2.1 to 2.44 may… CWE-121
- CVE-2026-15419 In the silabser.sys driver for CP210x devices v11.5.0 and earlier, a local unprivileged… CWE-121
- CVE-2026-88047 Tesseract is an open source OCR engine. CWE-121
- CVE-2026-88289 GeoVision GV-LPC2211 V1.14 (260903) fails to validate attacker-controlled variable-length… CWE-121