Is CVE-2019-10056 actively exploited?

No active exploitation of CVE-2019-10056 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-10056 be exploited remotely?

Yes. CVE-2019-10056 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2019-10056?

CVE-2019-10056 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2019-10056

CWE-787Published: August 28, 2019· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

An issue was discovered in Suricata 4.1.3. The code mishandles the case of sending a network packet with the right type, such that the function DecodeEthernet in decode-ethernet.c is executed a second time. At this point, the algorithm cuts the first part of the packet and doesn't determine the current length. Specifically, if the packet is exactly 28 long, in the first iteration it subtracts 14 bytes. Then, it is working with a packet length of 14. At this point, the case distinction says it is a valid packet. After that it casts the packet, but this packet has no type, and the program crashes at the type case distinction.

NVD Source

Technical Analysis

CVE-2019-10056 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.