CVE-2025-35021

MEDIUMNVD 6.56.5—Trending — 3 sources updated this week

6.5

By failing to authenticate three times to an unconfigured Abilis CPX device via SSH, an attacker can login to a restricted shell on the fourth attempt, and from there, relay connections.

CVSS v3: 6.5
EG Score: 6.5(medium)
EPSS: 20.0%
KEV: Not listed

Published

November 4, 2025

Last Modified

January 13, 2026

References (3)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-1188Insecure Default Initialization of Resource

Data Freshness Timeline

(refreshed 9× in last 7d / 9× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 19:53 UTCEG score recompute
2026-05-29 19:53 UTCGHSA enrichment
2026-05-29 13:44 UTCepss_batch

Frequently asked(5)

What is CVE-2025-35021?

CVE-2025-35021 is a medium vulnerability published on November 4, 2025. By failing to authenticate three times to an unconfigured Abilis CPX device via SSH, an attacker can login to a restricted shell on the fourth attempt, and from there, relay connections.

When was CVE-2025-35021 disclosed?

CVE-2025-35021 was first published in the National Vulnerability Database on November 4, 2025, with the most recent update on January 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2025-35021 actively exploited?

CVE-2025-35021 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 20.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2025-35021?

CVE-2025-35021 has a CVSS v3 base score of 6.5 (NVD).

How do I remediate CVE-2025-35021?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-35021, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2025-35021

📅 Published

🔄 Last Modified

🔗 References (3)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2025-35021?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (3)

Frequently asked(5)

Related CVEs(same CWE)