How severe is CVE-2018-18206?

CVE-2018-18206 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-18206 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-18206?

CVE-2018-18206 affects Bytom. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-18206?

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-2018-18206 published?

CVE-2018-18206 was published on 2018-10-10 and last updated on 2026-06-17.

CVE-2018-18206

CVE-2018-18206 is a high-severity vulnerability in Bytom with a CVSS 3.x base score of 7.5. 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-190.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-190
Affected product: Bytom
Published: 2018-10-10
Last modified: 2026-06-17

Description

In the client in Bytom before 1.0.6, checkTopicRegister in p2p/discover/net.go does not prevent negative idx values, leading to a crash.

Frequently asked questions

What is CVE-2018-18206?: In the client in Bytom before 1.0.6, checkTopicRegister in p2p/discover/net.go does not prevent negative idx values, leading to a crash.
How severe is CVE-2018-18206?: CVE-2018-18206 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-18206 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-18206?: CVE-2018-18206 affects Bytom. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-18206?: 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-2018-18206 published?: CVE-2018-18206 was published on 2018-10-10 and last updated on 2026-06-17.

References

https://github.com/Bytom/bytom/commit/1ac3c8ac4f2b1e1df9675228290bda6b9586ba42

Affected products (1)

cpe:2.3:a:bytom:bytom:*:*:*:*:*:*:*:*

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