CVE-2021-3195: bitcoin bitcoin_core Improper Input Validation
Vulnerability summary
CVE-2021-3195 is a high (CVSS 7.5) Improper Input Validation vulnerability in bitcoin bitcoin_core. EPSS estimates a 1.30% chance of exploitation in the next 30 days, higher than 70.3% of scored vulnerabilities. 1 public exploit is recorded.
Public exploit (GitHub, Date unknown)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 1 · Related 1Timeline
- 21-01-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
bitcoind in Bitcoin Core through 0.21.0 can create a new file in an arbitrary directory (e.g., outside the ~/.bitcoin directory) via a dumpwallet RPC call. NOTE: this reportedly does not violate the security model of Bitcoin Core, but can violate the security model of a fork that has implemented dumpwallet restrictions
CVSS metrics
3 scores · 2 sources · 2 versions- OSV · AlpineEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS trend
Probability
1.30%
Chance of exploitation in the next 30 days
Percentile
70%
Versus all other CVEs
30-day change
Increase +0.11 pp
From 1.18% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundBitcoin
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Alpine1 product
- bitcoin< 0.21.1-r0
Bitcoin1 product
- bitcoin_core≤ 0.21.0
Opensuse1 product
- bitcoin&distro=openSUSE Leap 15.3< 0.21.2-bp153.2.3.1
Suse1 product
- bitcoin&distro=SUSE Package Hub 15 SP3< 0.21.2-bp153.2.3.1
4 vendors · 4 products
References
4 links- lists.opensuse.org/archives/…Advisory