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-2021-33930

24
FAUCET Score

CVE-2021-33930 is a buffer overflow vulnerability in the libsolv library, specifically within the pool_installable_whatprovides function, affecting openSUSE libsolv versions prior to 0.7.17. This flaw carries a CVSSv3 score of 7.5 (High), indicating it can be exploited remotely with low attack complexity, requiring no user interaction, to cause a Denial of Service. While the vulnerability is significant, there is currently no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or community discussion surrounding it.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.7.17CPE matchmatch criteria
cpe:2.3:a:opensuse:libsolv:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.46%
Probability of exploitation in next 30 days
EPSS Percentile
70.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0146 is in the 52nd percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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 (6)

microsoftpatch availablevia msrc
Product: 19002-16820Fixed in: 0.7.19-1
microsoftpatch availablevia msrc
Product: cm1 libsolv 0.7.19-1 on CBL Mariner 1.0Fixed in: 0.7.19-1
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: libsolv-0:0.7.16-3.el8_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 6.11 for RHEL 7Fixed in: libsolv-0:0.7.22-1.el7pc
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 6.11 for RHEL 8Fixed in: libsolv-0:0.7.22-1.el8pc
View patch
redhatend of lifevia redhat_api
Product: Red Hat Update Infrastructure 3 for Cloud ProvidersFixed in: libsolv

Vendor Advisories (2)

microsoft2021-Sep/CVE-2021-33930Important

Buffer overflow vulnerability in function pool_installable_whatprovides in src/repo.h in libsolv before 0.7.17 allows attackers to cause a Denial of Service.

Sep 14, 2021
redhatCVE-2021-33930Moderate

libsolv: heap-based buffer overflow in pool_installable_whatprovides() in src/repo.h

Dec 13, 2020

References

github.com / openSUSE/libsolv/issues/417
ExploitIssue TrackingThird Party Advisory