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CVE-2021-29133

28
FAUCET Score

CVE-2021-29133 describes a local file disclosure vulnerability in haserl, a component of the Alpine Linux Configuration Framework, affecting versions prior to 0.9.36. This flaw allows a local attacker to read the contents of any file on the filesystem due to insufficient verification. Rated with a CVSS score of 5.5 (Medium), the vulnerability has low attack complexity and requires local privileges, but can lead to high confidentiality impact. While not on the CISA KEV list, a Metasploit module exists for exploitation, though there is minimal community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.9.36CPE matchmatch criteria
cpe:2.3:a:haserl_project:haserl:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.08%
Probability of exploitation in next 30 days
EPSS Percentile
61.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0108 is in the 97th percentile among its peer group of 15,938 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 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

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / rapid7/metasploit-framework/pull/14833
ExploitPatchThird Party Advisory
github.com / rapid7/metasploit-framework/pull/14833/commits/5bf6b2d094deb22fa8183ce161b90cbe4fd40a70
PatchThird Party Advisory
gitlab.alpinelinux.org / alpine/aports/-/issues/12539
Issue TrackingVendor Advisory
twitter.com / steaIth/status/1364940271054712842
Third Party Advisory