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CVE-2021-28134

31
FAUCET Score

CVE-2021-28134 describes a critical remote command execution vulnerability in Clipper before version 1.0.5. An unauthenticated attacker can exploit this by sending a specially crafted IPC message to the exposed ipcRenderer IPC interface, leveraging the dangerous openExternal API. With a CVSS score of 9.8, this vulnerability allows for complete compromise of confidentiality, integrity, and availability. There is currently no public exploit code, Metasploit module, or significant community discussion, and it is not known to be actively exploited.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.5CPE matchmatch criteria
cpe:2.3:a:clipper_project:clipper:*:*:*:*:*:*:*:*

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
5.17%
Probability of exploitation in next 30 days
EPSS Percentile
91.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0517 is in the 86th percentile among its peer group of 36,897 CVEs.

Social Chatter

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

github.com / AkashRajpurohit/clipper/issues/13
ExploitThird Party Advisory
github.com / AkashRajpurohit/clipper/pull/14
PatchThird Party Advisory
github.com / AkashRajpurohit/clipper/pull/14/commits/28f1492a12234cf1e6af85c78bf22ee2f5090d19
PatchThird Party Advisory
github.com / AkashRajpurohit/clipper/releases/tag/v1.0.5
PatchThird Party Advisory