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-2020-15690

25
FAUCET Score

CVE-2020-15690 is a critical vulnerability affecting Nim before version 1.2.6, specifically within the standard library's asyncftpclient, due to a missing newline character check. With a CVSS score of 9.8, this network-exploitable flaw has low attack complexity and can lead to complete compromise of confidentiality, integrity, and availability. While the vulnerability is severe, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.2.6CPE matchmatch criteria
cpe:2.3:a:nim-lang:nim:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.18%
Probability of exploitation in next 30 days
EPSS Percentile
86.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0318 is in the 78th percentile among its peer group of 36,897 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

consensys.net / diligence/vulnerabilities/nim-asyncftpd-crlf-injection
ExploitThird Party Advisory
github.com / nim-lang/Nim/blob/dc5a40f3f39c6ea672e6dc6aca7f8118a69dda99/lib/pure/asyncftpclient.nim
ExploitThird Party Advisory
github.com / nim-lang/Nim/compare/v1.2.4...v1.2.6
PatchThird Party Advisory
github.com / tintinweb/pub/tree/master/pocs/cve-2020-15690
ExploitThird Party Advisory
openwall.com / lists/oss-security/2021/02/04/3
ExploitMailing ListThird Party Advisory