How severe is CVE-2019-25364?

CVE-2019-25364 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-25364 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-25364?

CVE-2019-25364 affects Tabslab Mailcarrier. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-25364?

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

Does CVE-2019-25364 have an EU (EUVD) identifier?

Yes. CVE-2019-25364 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2019-19700.

When was CVE-2019-25364 published?

CVE-2019-25364 was published on 2026-02-18 and last updated on 2026-06-17.

CVE-2019-25364

CVE-2019-25364 is a critical-severity vulnerability in Tabslab Mailcarrier with a CVSS 3.x base score of 9.8. 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-121.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.3
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2019-19700
Weakness: CWE-121
Affected product: Tabslab Mailcarrier
Published: 2026-02-18
Last modified: 2026-06-17

Description

MailCarrier 2.51 contains a buffer overflow vulnerability in the POP3 USER command that allows remote attackers to execute arbitrary code. Attackers can send a crafted oversized buffer to the POP3 service, overwriting memory and potentially gaining remote system access.

Frequently asked questions

What is CVE-2019-25364?: MailCarrier 2.51 contains a buffer overflow vulnerability in the POP3 USER command that allows remote attackers to execute arbitrary code. Attackers can send a crafted oversized buffer to the POP3 service, overwriting memory and potentially gaining remote system access.
How severe is CVE-2019-25364?: CVE-2019-25364 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-25364 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-25364?: CVE-2019-25364 affects Tabslab Mailcarrier. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-25364?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2019-25364 have an EU (EUVD) identifier?: Yes. CVE-2019-25364 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2019-19700.
When was CVE-2019-25364 published?: CVE-2019-25364 was published on 2026-02-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:tabslab:mailcarrier:2.51:*:*:*:*:*:*:*

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