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-2021-21996

26
FAUCET Score

CVE-2021-21996 is a high-severity vulnerability affecting SaltStack Salt versions prior to 3003.3, as well as various Debian and Fedora distributions. It allows an authenticated attacker with control over source and source_hash URLs to achieve full file system access as root on a Salt minion. The CVSS score of 7.5 indicates a high impact on confidentiality, integrity, and availability, with a network attack vector and high attack complexity. There is currently no public exploit code available, no evidence of active exploitation, and minimal community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 3000.3CPE matchmatch criteria
cpe:2.3:a:saltstack:salt:*:*:*:*:*:*:*:*
33CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
34CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
35CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.6
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.51%
Probability of exploitation in next 30 days
EPSS Percentile
88.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0351 is in the 86th percentile among its peer group of 1,162 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

pippatch availablevia ghsa
Product: saltFixed in: 3003.3

Vendor Advisories (2)

pipGHSA-pf7h-h2wq-m7pghigh

Exposure of Resource to Wrong Sphere in salt

Nov 21, 2021
redhatCVE-2021-21996Moderate

salt: user having control of source and source_hash URLs leads to root access

Sep 2, 2021

References

lists.debian.org / debian-lts-announce/2021/11/msg00017.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2021/11/msg00019.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/6BUWUF5VTENNP2ZYZBVFKPSUHLKLUBD5
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/ACVT7M4YLZRLWWQ6SGRK3C6TOF4FXOXT
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/MBAHHSGZLEJRCG4DX6J4RBWJAAWH55RQ
Mailing ListThird Party Advisory
saltproject.io / security_announcements/salt-security-advisory-2021-sep-02
PatchVendor Advisory
security.gentoo.org / glsa/202310-22
Third Party Advisory
debian.org / security/2021/dsa-5011
Third Party Advisory