Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2020-15091

22
FAUCET Score

CVE-2020-15091 is a medium-severity vulnerability affecting Tendermint versions 0.33.0 through 0.33.5. It allows a malicious block proposer to include invalid signatures, potentially halting the entire network, especially after a network restart without a chainID change. The vulnerability has a CVSS score of 6.5, indicating a network-based attack with low complexity and high availability impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.33.0, < 0.33.6CPE matchmatch criteria
cpe:2.3:a:tendermint:tendermint:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.91%
Probability of exploitation in next 30 days
EPSS Percentile
56.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0091 is in the 68th percentile among its peer group of 21,951 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
gopatch availablevia ghsa
Product: github.com/tendermint/tendermintFixed in: 0.33.6

Vendor Advisories (1)

goGHSA-6jqj-f58p-mrw3medium

Denial of Service in TenderMint

Dec 20, 2021

References

github.com / tendermint/tendermint/commit/480b995a31727593f58b361af979054d17d84340
PatchThird Party Advisory
github.com / tendermint/tendermint/issues/4926
ExploitIssue TrackingThird Party Advisory
github.com / tendermint/tendermint/security/advisories/GHSA-6jqj-f58p-mrw3
ExploitThird Party Advisory