How severe is CVE-2019-5619?

CVE-2019-5619 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-2019-5619 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-5619?

CVE-2019-5619 affects Aasync. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-5619?

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.

When was CVE-2019-5619 published?

CVE-2019-5619 was published on 2020-04-29 and last updated on 2026-06-17.

CVE-2019-5619

CVE-2019-5619 is a critical-severity vulnerability in Aasync 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-787.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Aasync
Published: 2020-04-29
Last modified: 2026-06-17

Description

AASync.com AASync version 2.2.1.0 suffers from an instance of CWE-121: Stack-based Buffer Overflow.

Frequently asked questions

What is CVE-2019-5619?: AASync.com AASync version 2.2.1.0 suffers from an instance of CWE-121: Stack-based Buffer Overflow.
How severe is CVE-2019-5619?: CVE-2019-5619 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-2019-5619 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-5619?: CVE-2019-5619 affects Aasync. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-5619?: 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.
When was CVE-2019-5619 published?: CVE-2019-5619 was published on 2020-04-29 and last updated on 2026-06-17.

References

https://www.rapid7.com/db/modules/exploit/windows/ftp/aasync_list_reply

Affected products (1)

cpe:2.3:a:aasync:aasync:2.2.1.0:*:*:*:*:*:*:*

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