CVE-2019-25679

HIGH EPSS 23.2%
Published Apr 5, 20262mo ago · Modified Jun 17, 20261w ago
8.5 CVSS 4.0
High
Find Similar
Published Apr 5, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

Description

RealTerm Serial Terminal 2.0.0.70 contains a structured exception handling (SEH) buffer overflow vulnerability in the Echo Port tab that allows local attackers to execute arbitrary code by supplying a malicious payload. Attackers can craft a buffer overflow payload with a POP POP RET gadget chain and shellcode that triggers code execution when pasted into the Port field and the Change button is clicked.

CVSS Details

Base Score
8.5
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/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
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction P
Scope X

Threat Intelligence

EPSS Exploit Probability
23.2% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

Affected Products 1

VendorProductVersionRange
crunrealterm2.0.0.70any

References 4

  • realterm.sourceforge.io https://realterm.sourceforge.io/
    Product
  • sourceforge.net https://sourceforge.net/projects/realterm/files/
    Product
  • exploit-db.com https://www.exploit-db.com/exploits/46441
    ExploitVDB Entry
  • vulncheck.com https://www.vulncheck.com/advisories/realterm-serial-terminal-buffer-overflow-seh
    Third Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.