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CVE-2025-28388

29
FAUCET Score

CVE-2025-28388 is a critical vulnerability affecting OpenC3 COSMOS versions prior to v6.0.2, stemming from hardcoded service account credentials. With a CVSS score of 9.8, this flaw allows unauthenticated remote attackers to achieve complete compromise of confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion, indicating awareness and potential future exploitation. Organizations using affected OpenC3 COSMOS versions should prioritize patching to mitigate this severe risk.

Impacted Technologies

VendorProductVersion(s)CPE
6.0.0CPE matchmatch criteria
cpe:2.3:a:openc3:cosmos:6.0.0:*:*:*:enterprise:*:*:*
6.0.0CPE matchmatch criteria
cpe:2.3:a:openc3:cosmos:6.0.0:*:*:*:open_source:*:*:*

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
0.51%
Probability of exploitation in next 30 days
EPSS Percentile
40.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0051 is in the 19th percentile among its peer group of 36,835 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

Remediation records are not available for this CVE.

References

github.com / OpenC3/cosmos/pull/1816
github.com / OpenC3/cosmos/pull/1816/commits/195974a019f375f7c5a35f48e4151babb40649ac
github.com / OpenC3/cosmos/releases/tag/v6.0.2
openc3.com
Product
visionspace.com / openc3-cosmos-a-security-assessment-of-an-open-source-mission-framework
ExploitMitigationThird Party Advisory