Vulnerability in Z.cash Zcash
CVE-2019-11636
Zcash 2.x allows an inexpensive approach to "fill all transactions of all blocks" and "prevent any real transaction from occurring" via a "Sapling Wood-Chipper" attack.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.022 (81.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000
Affected products
- Z.cash Zcash — versions 2.0.5
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/zcash/zcash/issues/3955 (Third Party Advisory)
- twitter.com/dukeleto/status/1120467430118232066 (Third Party Advisory)
- saplingwoodchipper.github.io
Frequently asked questions
- What is CVE-2019-11636?
- CVE-2019-11636 is a high-severity vulnerability in Z.cash Zcash, classified under CWE-254. CVSS score: 7.5/10. Published 2019-05-01.
- How severe is CVE-2019-11636?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2019-11636 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.