7.5

CVE-2017-12842: bitcoin bitcoin_core Improper Input Validation

Modified
Published 16-03-2020Last modified 05-08-2024

Vulnerability summary

CVE-2017-12842 is a high (CVSS 7.5) Improper Input Validation vulnerability in bitcoin bitcoin_core. EPSS estimates a 2.22% chance of exploitation in the next 30 days, higher than 82.6% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 2% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
2.22%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 16-03-2020
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

Bitcoin Core before 0.14 allows an attacker to create an ostensibly valid SPV proof for a payment to a victim who uses an SPV wallet, even if that payment did not actually occur. Completing the attack would cost more than a million dollars, and is relevant mainly only in situations where an autonomous system relies solely on an SPV proof for transactions of a greater dollar amount.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

2.22%

Chance of exploitation in the next 30 days

Percentile

83%

Versus all other CVEs

30-day change

No change 0.00 pp

From 2.22% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Bitcoin1 product

1 vendor · 1 product

References

3 links