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CVE-2021-45941

23
FAUCET Score

CVE-2021-45941 describes a heap-based buffer overflow affecting libbpf versions 0.6.0 and 0.6.1, specifically within the __bpf_object__open function. With a CVSS score of 6.5 (Medium), this vulnerability can be triggered remotely with low attack complexity, potentially leading to high availability impact, though it requires user interaction. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
0.6.0CPE matchmatch criteria
cpe:2.3:a:libbpf_project:libbpf:0.6.0:*:*:*:*:*:*:*
0.6.1CPE matchmatch criteria
cpe:2.3:a:libbpf_project:libbpf:0.6.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
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
1.10%
Probability of exploitation in next 30 days
EPSS Percentile
62.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0110 is in the 75th percentile among its peer group of 26,219 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: libbpf

Vendor Advisories (1)

redhatCVE-2021-45941Moderate

libbpf: heap-based buffer overflow (8 bytes) in __bpf_object__open

Jan 1, 2022

References

bugs.chromium.org / p/oss-fuzz/issues/detail
ExploitIssue TrackingThird Party Advisory
github.com / google/oss-fuzz-vulns/blob/main/vulns/libbpf/OSV-2021-1576.yaml
ExploitThird Party Advisory