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PatchSiren cyber security CVE debrief

CVE-2025-53968 EVMAPA CVE debrief

CVE-2025-53968 is a high-severity authentication weakness described by CISA as an unlimited authentication-attempt condition in EVMAPA. Because there are no limits on the number of authentication attempts, an attacker can repeatedly submit requests and potentially exhaust the authentication service, leading to denial of service and creating conditions favorable for brute-force guessing attempts.

Vendor
EVMAPA
Product
Unknown
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-01-22
Original CVE updated
2026-01-22
Advisory published
2026-01-22
Advisory updated
2026-01-22

Who should care

Operators and administrators responsible for EVMAPA deployments, especially any environment that exposes authentication services to network access, should treat this as a priority availability and account-security issue. Security teams should also care because the advisory identifies no vendor fix statement and no affected product version details, which may slow remediation planning.

Technical summary

The advisory maps the issue to CWE-307 and describes a missing limit on repeated authentication attempts. The published CVSS v3.1 vector is AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, reflecting a remotely reachable issue with primary impact to availability. The source corpus does not list product versions or a vendor patch, and the remediation note states that EVMAPA did not release a statement regarding this vulnerability.

Defensive priority

High. The issue is remotely reachable, requires no privileges or user interaction, and can drive service unavailability. The lack of a vendor statement in the source advisory increases operational urgency for compensating controls and direct vendor follow-up.

Recommended defensive actions

  • Review EVMAPA authentication endpoints for rate limiting, temporary lockout, backoff, or challenge controls.
  • Apply compensating controls such as network filtering, request throttling, and monitoring for repeated authentication failures.
  • Increase alerting for spikes in authentication attempts and authentication-service resource exhaustion.
  • Restrict exposure of the authentication interface to trusted networks where feasible.
  • Contact EVMAPA directly for remediation guidance, since the advisory states no vendor statement was provided.

Evidence notes

All claims are grounded in the CISA CSAF advisory ICSA-26-022-08 and its included metadata. The source states that there are no limitations on authentication attempts, that this can cause denial of service and brute-force opportunities, and that the published CVSS vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. The source metadata also shows no product names, no version list, and a remediation note indicating EVMAPA did not release a statement regarding the vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-53968 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-53968

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2025-53968 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-53968

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-022-08.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-26-022-08

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/topics/industrial-control-systems

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-alerts/ics-alert-10-301-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf

    Reference

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.