CVE-2020-27213Not scoredCWE-330

CVE-2020-27213: Ethernut Nut/os vulnerability

Ethernut · Nut/os

Affected: Ethernut Nut/os · Exploitation: unlikely (under 1%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

1.0%probability of exploitation in the next 30 days

62nd percentile

050100

Higher than 62% of scored CVEs

Not scored yet. The CVE record carries no CVSS score.

DescriptionCVE.org

An issue was discovered in Ethernut Nut/OS 5.1. The code that generates Initial Sequence Numbers (ISNs) for TCP connections derives the ISN from an insufficiently random source. As a result, an attacker may be able to determine the ISN of current and future TCP connections and either hijack existing ones or spoof future ones. While the ISN generator seems to adhere to RFC 793 (where a global 32-bit counter is incremented roughly every 4 microseconds), proper ISN generation should aim to follow at least the specifications outlined in RFC 6528.

On the Atlas

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Exploitation: Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Use of Insufficiently Random Values · Cryptography
Vendor: Ethernut
Published: October 2023
Band: Unlikely (under 1%), October 2023

CoverageNo articles yet

No CyberSIXT article names CVE-2020-27213 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.