VULNERABILITY INTELLIGENCE
CVE-2016-20047
CVSS score8.6 HIGH
EPSS probability0.15%
CISA KEVNot currently listed
Published2026-03-28
Last modified2026-06-17
CVSS vectorCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Description
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.
Weakness classification
- CWE-787: Out-of-bounds Write