CVE-2026-2234

CRITICALNVD 9.19.1—

9.1

C&Cm@il developed by HGiga has a Missing Authentication vulnerability, allowing unauthenticated remote attackers to read and modify any user's mail content.

CVSS v3: 9.1
EG Score: 9.1(medium)
EPSS: 25.4%
KEV: Not listed

Published

February 9, 2026

Last Modified

April 15, 2026

Advisory Details (1)

Auto-updated May 22, 2026

No patch confirmed yet. Sources: cert.

cert

HGiga｜C&Cm@il - 3 Vulnerabilities-TWCERT/CC Taiwan Computer Emergency Response Team/Coordination Center

https://www.twcert.org.tw/en/cp-139-10704-d5aba-2.html

Weakness Classification(1)

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

CWE-306Missing Authentication for Critical Function

Data Freshness Timeline

(refreshed 15× in last 7d / 20× 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.

2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-26 13:44 UTCepss_batch
2026-05-26 13:44 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-24 16:59 UTCepss_batch
2026-05-23 15:21 UTCepss_batch
2026-05-22 21:16 UTCepss_batch
2026-05-20 23:17 UTCEG score recompute
2026-05-20 23:17 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-2234?

CVE-2026-2234 is a critical vulnerability published on February 9, 2026. C&Cm@il developed by HGiga has a Missing Authentication vulnerability, allowing unauthenticated remote attackers to read and modify any user's mail content.

When was CVE-2026-2234 disclosed?

CVE-2026-2234 was first published in the National Vulnerability Database on February 9, 2026, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-2234 actively exploited?

CVE-2026-2234 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 25.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-2234?

CVE-2026-2234 has a CVSS v3 base score of 9.1 (NVD).

How do I remediate CVE-2026-2234?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-2234, 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-2026-2234

📅 Published

🔄 Last Modified

📋 Advisory Details (1)

HGiga｜C&Cm@il - 3 Vulnerabilities-TWCERT/CC Taiwan Computer Emergency Response Team/Coordination Center

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-2234?

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Advisory Details (1)

Frequently asked(5)

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