How severe is CVE-2026-6351?

CVE-2026-6351 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-6351 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-6351?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-6351 have an EU (EUVD) identifier?

Yes. CVE-2026-6351 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23167.

When was CVE-2026-6351 published?

CVE-2026-6351 was published on 2026-04-16 and last updated on 2026-06-17.

CVE-2026-6351

CVE-2026-6351 is a high-severity vulnerability with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-93.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.7
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-23167
Weakness: CWE-93
Published: 2026-04-16
Last modified: 2026-06-17

Description

MailGates/MailAudit developed by Openfind has a CRLF Injection vulnerability, allowing unauthenticated remote attackers to exploit this vulnerability to read system files.

Frequently asked questions

What is CVE-2026-6351?: MailGates/MailAudit developed by Openfind has a CRLF Injection vulnerability, allowing unauthenticated remote attackers to exploit this vulnerability to read system files.
How severe is CVE-2026-6351?: CVE-2026-6351 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-6351 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-6351?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-6351 have an EU (EUVD) identifier?: Yes. CVE-2026-6351 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23167.
When was CVE-2026-6351 published?: CVE-2026-6351 was published on 2026-04-16 and last updated on 2026-06-17.

References

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