How severe is CVE-2018-17580?

CVE-2018-17580 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability high.

Is CVE-2018-17580 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-17580?

CVE-2018-17580 affects Broadcom Tcpreplay. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-17580?

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.

When was CVE-2018-17580 published?

CVE-2018-17580 was published on 2018-09-28 and last updated on 2026-06-17.

CVE-2018-17580

CVE-2018-17580 is a high-severity vulnerability in Broadcom Tcpreplay with a CVSS 3.x base score of 7.1. 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: High (CVSS 3.x base score 7.1)
CVSS v2: 5.8
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Broadcom Tcpreplay
Published: 2018-09-28
Last modified: 2026-06-17

Description

A heap-based buffer over-read exists in the function fast_edit_packet() in the file send_packets.c of Tcpreplay v4.3.0 beta1. This can lead to Denial of Service (DoS) and potentially Information Exposure when the application attempts to process a crafted pcap file.

Frequently asked questions

What is CVE-2018-17580?: A heap-based buffer over-read exists in the function fast_edit_packet() in the file send_packets.c of Tcpreplay v4.3.0 beta1. This can lead to Denial of Service (DoS) and potentially Information Exposure when the application attempts to process a crafted pcap file.
How severe is CVE-2018-17580?: CVE-2018-17580 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability high.
Is CVE-2018-17580 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-17580?: CVE-2018-17580 affects Broadcom Tcpreplay. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-17580?: 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.
When was CVE-2018-17580 published?: CVE-2018-17580 was published on 2018-09-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:broadcom:tcpreplay:4.3.0:beta1:*:*:*:*:*:*

More vulnerabilities in Broadcom Tcpreplay

CVE-2018-18408 — Critical (CVSS 9.8): A use-after-free was discovered in the tcpbridge binary of Tcpreplay 4.3.0 beta1. The issue gets triggered in the…
CVE-2020-12740 — Critical (CVSS 9.1): tcprewrite in Tcpreplay through 4.3.2 has a heap-based buffer over-read during a get_c operation. The issue is being…
CVE-2025-51006 — High (CVSS 7.8): Within tcpreplay's tcprewrite, a double free vulnerability has been identified in the dlt_linuxsll2_cleanup() function…
CVE-2022-37049 — High (CVSS 7.8): The component tcpprep in Tcpreplay v4.4.1 was discovered to contain a heap-based buffer overflow in parse_mpls at…
CVE-2022-37048 — High (CVSS 7.8): The component tcprewrite in Tcpreplay v4.4.1 was discovered to contain a heap-based buffer overflow in…
CVE-2022-37047 — High (CVSS 7.8): The component tcprewrite in Tcpreplay v4.4.1 was discovered to contain a heap-based buffer overflow in get_ipv6_next at…

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Other CWE-125 (Out-of-bounds Read) vulnerabilities

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CVE-2017-14451 — Critical (CVSS 10.0): An exploitable out-of-bounds read vulnerability exists in libevm (Ethereum Virtual Machine) of CPP-Ethereum. A…
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