RealTerm Serial Terminal 2.0.0.70 Buffer Overflow SEH
Published Apr 5, 2026
8.5
HIGHCVSS 4.0
EPSS 0.31%
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.
Affected products
-
- Version 1.11.2StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Realterm | RealTerm: Serial Terminal | n/a |
|
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
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
1 other source (NVD) ▾
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
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Apr 6, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 4, 2026.
Score over time
Apr-Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 0.31% (0.00314) | 22.15th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.31% (0.00314) | 22.93th | v5 (v2026.06.15) |
| Apr 6, 2026 | 0.01% (0.00013) | 2.31th | v4 (v2025.03.14) |
References (4)
- https://realterm.sourceforge.io/ product
- https://sourceforge.net/projects/realterm/files/ product
- https://www.exploit-db.com/exploits/46441 exploitVDB Entry
- https://www.vulncheck.com/advisories/realterm-serial-terminal-buffer-overflow-seh third-party-advisoryThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://realterm.sourceforge.io/ | product | |
| https://sourceforge.net/projects/realterm/files/ | product | |
| https://www.exploit-db.com/exploits/46441 | exploitVDB Entry | |
| https://www.vulncheck.com/advisories/realterm-serial-terminal-buffer-overflow-seh | third-party-advisoryThird Party Advisory |
Change history (0)
No recorded changes yet.