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Fencer Intel
high 7.5

CVE-2020-17445 json

An issue was discovered in picoTCP 1.7.0.

published 5y ago modified 4mo ago also EUVD-2020-9398

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.9%
EPSS 2.9% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known

Summary

An issue was discovered in picoTCP 1.7.0. The code for processing the IPv6 destination options does not check for a valid length of the destination options header. This results in an Out-of-Bounds Read, and, depending on the memory protection mechanism, this may result in Denial-of-Service in pico_ipv6_process_destopt() in pico_ipv6.c.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-20-343-01 updated cvss 7.5

Multiple Embedded TCP/IP Stacks

  • multiple open source FNET 4.6.3 multiple open source Nut/Net <= 5.1 multiple open source open-iscsi <= 2.1.12 multiple open source picoTCP (EOL) <= 1.7.0 multiple open source picoTCP-NG <= 1.7.0 multiple open source uIP (EOL) <= 1.0
    +2 more products
    multiple open source uIP-Contiki-NG <= 4.5 multiple open source uIP-Contiki-OS (end-of-life [EOL]) <= 3.0
    affected: vendor fix yanzi.dev

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

2.89% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.