7.8
CVE-2019-25634
- EPSS 0.26%
- Veröffentlicht 24.03.2026 11:27:07
- Zuletzt bearbeitet 03.06.2026 18:44:27
- Erkennungen
LoginBase64 Decoder 1.1.2 Local Buffer Overflow SEH Egghunter
Base64 Decoder 1.1.2 contains a stack-based buffer overflow vulnerability that allows local attackers to execute arbitrary code by triggering a structured exception handler (SEH) overwrite. Attackers can craft a malicious input file that overflows a buffer, overwrites the SEH chain with a POP-POP-RET gadget address, and uses an egghunter payload to locate and execute shellcode for code execution.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
4mhz ≫ Base64 Decoder Version 1.1.2
| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.26% | 0.173 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| NIST | 7.8 | 1.8 | 5.9 |
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
|
| disclosure@vulncheck.com | 8.6 | 0 | 0 |
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
|
| disclosure@vulncheck.com | 8.4 | 2.5 | 5.9 |
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
|
CWE-787 Out-of-bounds Write
The product writes data past the end, or before the beginning, of the intended buffer.
http://4mhz.de/b64dec.html
https://www.exploit-db.com/exploits/46625
http://4mhz.de/download.php?file=b64dec-1-1-2.zip
https://www.vulncheck.com/advisories/base64-decoder-local-buffer-overflow-seh-egghunter