Buffer overflow in Helios Textpad
CVE-2018-25271
Textpad 8.1.2 contains a denial of service vulnerability that allows local attackers to crash the application by supplying an excessively long buffer string through the Run command interface. Attackers can paste a 5000-byte payload into the Command field via Tools > Run to trigger a buffer overflow that crashes the application.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.002 (7.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 7.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Helios Textpad — versions 8.1.2
- Textpad — versions 8.1.2
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/45956 (Exploit, VDB Entry, exploit)
- textpad.com (Product, product)
- www.textpad.com/download/v81/win32/txpeng812-32.zip (product, Broken Link)
- www.vulncheck.com/advisories/textpad-denial-of-service-via-run-command (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2018-25271?
- CVE-2018-25271 is a medium-severity vulnerability in Helios Textpad, classified under Out-of-bounds Write. CVSS score: 6.2/10. Published 2026-04-22.
- How severe is CVE-2018-25271?
- Medium severity. CVSS v3 base score is 6.2 out of 10.