Buffer overflow in Ethereum Aleth
CVE-2020-26800
A stack overflow vulnerability in Aleth Ethereum C++ client version <= 1.8.0 using a specially crafted a config.json file may result in a denial of service.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.012 (67.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/ethereum/aleth (Third Party Advisory)
- ethereum.org/en/about/ (Vendor Advisory)
- github.com/ethereum/aleth/issues/5917 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-26800?
- CVE-2020-26800 is a medium-severity vulnerability in Ethereum Aleth, classified under Out-of-bounds Write. CVSS score: 5.5/10. Published 2021-01-11.
- How severe is CVE-2020-26800?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2020-26800 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.