Is CVE-2026-44596 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2026-44596, but active exploitation has not been confirmed.

Can CVE-2026-44596 be exploited remotely?

Yes. CVE-2026-44596 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-44596?

CVE-2026-44596 has a CVSS score of 9.8 (CRITICAL).

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CRITICALPOC

CVE-2026-44596

CWE-307Published: July 16, 2026· Updated: Jul 17, 2026

9.8

CVSS v3.1

EPSS:1.77%probability of exploitation in 30 daysPercentile:75.7th

Official Description

Yamcs is a mission control framework. Prior to 5.12.7, the authentication endpoint POST /auth/token in yamcs-core, handled by yamcs-core/src/main/java/org/yamcs/http/auth/AuthHandler.java, lacked any rate limiting, account lockout, or failed-attempt throttling, so an unauthenticated remote attacker could perform unlimited password-guessing attempts against any user account, significantly increasing the risk of successful brute-force attacks. This issue is fixed in versions 5.12.7 and 5.13.0.

NVD Source

Risk Analysis

This critical vulnerability in Yamcs, specifically versions prior to 5.12.7, allows for unlimited password-guessing attempts against any user account. The authentication endpoint lacks rate limiting, account lockout, or failed-attempt throttling, significantly increasing the risk of successful brute-force attacks. The CVSS score of 9.8 highlights the severe impact on confidentiality and integrity.

A proof-of-concept exploit is publicly available for this vulnerability. It is remotely exploitable without authentication and with low attack complexity.

Recommended Action

Upgrade Yamcs to version 5.12.7 or 5.13.0 or later to address the lack of rate limiting. Implement strong password policies and consider multi-factor authentication to further protect accounts.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2026-44596 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

A proof-of-concept (PoC) exploit exists for CVE-2026-44596. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.