CVE-2016-20047EKG Gadu 1.9 Local Buffer Overflow via Username Parameter
Updated under an hour ago ()
Does this affect you?
It affects EKG Gadu. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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
- 8.4 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-787
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Awaiting Analysis
- Record last updated
- Mar 30, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
ekg EKG Gadu ekg:gadu (from the name) | 1:1.9~pre+r2855-3+b1 | CNA record |
References
- https://www.exploit-db.com/exploits/40392exploit
- http://ekg.chmurka.net/product
- https://www.vulncheck.com/advisories/ekg-gadu-local-buffer-overflow-via-username-parameterthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.