HOMEVULNERABILITIESCVE-2026-44595
MEDIUMPOC

CVE-2026-44595

CWE-862Published: July 16, 2026· Updated: Jul 18, 2026

4.3
CVSS v3.1
EPSS:1.01%probability of exploitation in 30 daysPercentile:59.2th

Official Description

Yamcs is a mission control framework. Prior to 5.12.7, the IAM API endpoints listUsers, getUser, listGroups, and getGroup in yamcs-core did not enforce the required SystemPrivilege.ControlAccess check in yamcs-core/src/main/java/org/yamcs/http/api/IamApi.java, so any authenticated user, even one with low or no privileges, could enumerate all user accounts in the system including their usernames, superuser status, and group memberships. This issue is fixed in versions 5.12.7 and 5.13.0.

NVD Source

Technical Analysis

CVE-2026-44595 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A proof-of-concept (PoC) exploit exists for CVE-2026-44595. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected Vendors & Products

spaceapplications1 product(s)
yamcs
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/yamcs/yamcs/commit/0e12b518f103f24681299318a30a460fe4327b88
PATCHhttps://github.com/yamcs/yamcs/commit/e90099fba98e96214217c195b6a5b87b5f46e51c
ADVISORYhttps://github.com/yamcs/yamcs/security/advisories/GHSA-p2rj-mrmc-9w29
ADVISORYhttps://github.com/yamcs/yamcs/security/advisories/GHSA-p2rj-mrmc-9w29

All References (6)

→
https://github.com/yamcs/yamcs/commit/0e12b518f103f24681299318a30a460fe4327b88Patch
→
https://github.com/yamcs/yamcs/commit/e90099fba98e96214217c195b6a5b87b5f46e51cPatch
→
https://github.com/yamcs/yamcs/releases/tag/yamcs-5.12.7Release Notes
→
https://github.com/yamcs/yamcs/releases/tag/yamcs-5.13.0Release Notes
→
https://github.com/yamcs/yamcs/security/advisories/GHSA-p2rj-mrmc-9w29Exploit · Vendor Advisory
→
https://github.com/yamcs/yamcs/security/advisories/GHSA-p2rj-mrmc-9w29Exploit · Vendor Advisory

Quick Facts

CVE IDCVE-2026-44595
CVSS Score4.3 / 10
SeverityMEDIUM
WeaknessCWE-862
CISA KEVNo
ExploitPOC
EPSS (30d)1.01%
Affected1 vendor(s)
PublishedJul 16, 2026

Related CVEs (CWE-862)

CVE-2024-52416
10.0
CVE-2026-33712
10.0
CVE-2024-33566
10.0
CVE-2026-0092
10.0
CVE-2025-45854
10.0
CVE-2026-66012
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-44595 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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