HIGHVulnerability
Verified
Global
NVD HIGH: CVE-2016-20047 — EKG Gadu 1.9~pre+r2855-3+b1 contains a local buffer overflow vulnerability in th...
Saturday, March 28, 2026 at 12:16 PM UTC·Source: NIST NVD
Updated: Friday, April 3, 2026 at 02:38 AM UTC
Executive Summary
EKG Gadu 1.9~pre+r2855-3+b1 contains a local buffer overflow vulnerability in the username handling that allows local attackers to execute arbitrary code by supplying an oversized username string. Attackers can trigger the overflow in the strlcpy function by passing a crafted buffer exceeding 258 bytes to overwrite the instruction pointer and execute shellcode with user privileges.
Analysis
EKG Gadu 1.9~pre+r2855-3+b1 contains a local buffer overflow vulnerability in the username handling that allows local attackers to execute arbitrary code by supplying an oversized username string. Attackers can trigger the overflow in the strlcpy function by passing a crafted buffer exceeding 258 bytes to overwrite the instruction pointer and execute shellcode with user privileges.
CVSS Score: 8.4. Published: 2026-03-28T12:16:01.013.