CVE-2018-18861
High
High exploit probability or critical severity with a known exploit.
CVSS base
9.8
CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
4.1%
90.2th percentile
CISA KEV
Not listed
Weakness / dates
CWE-119
Published 2018-11-20 · modified 2026-08-19
CVSS breakdown
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
| Attack Vector | N | Network |
| Attack Complexity | L | Low |
| Privileges Required | N | None |
| User Interaction | N | None |
| Scope | U | Unchanged |
| Confidentiality | H | High |
| Integrity | H | High |
| Availability | H | High |
Timeline
- 2018-11-20 — Published (NVD)
- 2026-08-19 — Last modified (NVD)
Description
Buffer overflow in PCMan FTP Server 2.0.7 allows for remote code execution via the APPE command.