How severe is CVE-2019-16410?

CVE-2019-16410 has a CVSS 3.x base score of 9.1, 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 none, and availability high.

Is CVE-2019-16410 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-16410?

CVE-2019-16410 affects Suricata-ids Suricata. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-16410?

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-2019-16410 published?

CVE-2019-16410 was published on 2019-09-24 and last updated on 2026-06-17.

CVE-2019-16410

CVE-2019-16410 is a critical-severity vulnerability in Suricata-ids Suricata with a CVSS 3.x base score of 9.1. 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-125.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 6.4
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Suricata-ids Suricata
Published: 2019-09-24
Last modified: 2026-06-17

Description

An issue was discovered in Suricata 4.1.4. By sending multiple fragmented IPv4 packets, the function Defrag4Reassemble in defrag.c tries to access a memory region that is not allocated, because of a lack of header_len checking.

Frequently asked questions

What is CVE-2019-16410?: An issue was discovered in Suricata 4.1.4. By sending multiple fragmented IPv4 packets, the function Defrag4Reassemble in defrag.c tries to access a memory region that is not allocated, because of a lack of header_len checking.
How severe is CVE-2019-16410?: CVE-2019-16410 has a CVSS 3.x base score of 9.1, 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 none, and availability high.
Is CVE-2019-16410 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-16410?: CVE-2019-16410 affects Suricata-ids Suricata. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-16410?: 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-2019-16410 published?: CVE-2019-16410 was published on 2019-09-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:suricata-ids:suricata:4.1.4:*:*:*:*:*:*:*

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CVE-2019-10054 — High (CVSS 7.5): An issue was discovered in Suricata 4.1.3. The function process_reply_record_v3 lacks a check for the length of…

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