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CVE-2023-45277

22
FAUCET Score

CVE-2023-45277 is a directory traversal vulnerability affecting Yamcs 5.8.6. This flaw in the API's storage functionality allows an unauthenticated attacker to escape the base directory, navigate system directories, and read arbitrary files. Rated 7.5 HIGH on CVSS, it has a low attack complexity and poses a significant risk to confidentiality. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
5.8.6CPE matchmatch criteria
cpe:2.3:a:spaceapplications:yamcs:5.8.6:*:*:*:*:*:*:*

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:H/I:N/A:N

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

Exploit Intelligence

EPSS Score
1.00%
Probability of exploitation in next 30 days
EPSS Percentile
59.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0100 is in the 35th percentile among its peer group of 51,506 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 (2)

github_advisorypatch availablevia nvd_reference
View patch
mavenpatch availablevia ghsa
Product: org.yamcs:yamcsFixed in: 5.8.7

Vendor Advisories (1)

mavenGHSA-w4m2-qmh3-2g8fhigh

Yamcs Path Traversal vulnerability

Oct 19, 2023

References

github.com / yamcs/yamcs/compare/yamcs-5.8.6...yamcs-5.8.7
Patch
linkedin.com / pulse/yamcs-vulnerability-assessment-visionspace-technologies
ExploitThird Party Advisory