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Vulnerability record · CVE-2020-17529 · published 9 December 2020

CVE-2020-17529: Apache nuttx out-of-bounds write vulnerability

Apache · Nuttx

Out-of-bounds Write vulnerability in TCP Stack of Apache NuttX (incubating) versions up to and including 9.1.0 and 10.0.0 allows attacker to corrupt memory by supplying and invalid fragmentation offset value specified in the IP header. This is only impacts builds with both CONFIG_EXPERIMENTAL and CONFIG_NET_TCP_REASSEMBLY build flags enabled.

9.8 CVSS 3.1 Critical EPSS 2.9% · top 13.6% CWE-787 · Out-of-bounds write
9.8CVSS 3.1 base score, v2 6.8
2.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References
17 Jun 2026Last modified by NVD

Description

Out-of-bounds Write vulnerability in TCP Stack of Apache NuttX (incubating) versions up to and including 9.1.0 and 10.0.0 allows attacker to corrupt memory by supplying and invalid fragmentation offset value specified in the IP header. This is only impacts builds with both CONFIG_EXPERIMENTAL and CONFIG_NET_TCP_REASSEMBLY build flags enabled.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.openwall.com/lists/oss-security/2020/12/09/5 Mailing ListThird Party Advisory
https://lists.apache.org/thread.html/r4d71ae3ab96b589835b94ba7ac4cb88a704e7307bceefeab749366f3%40%3Cdev.nuttx.apache.org Mailing ListVendor Advisory
https://lists.apache.org/thread.html/r4d71ae3ab96b589835b94ba7ac4cb88a704e7307bceefeab749366f3%40%3Cdev.nuttx.apache.org Mailing ListVendor Advisory
https://lists.apache.org/thread.html/r4d71ae3ab96b589835b94ba7ac4cb88a704e7307bceefeab749366f3%40%3Cdev.nuttx.apache.org Mailing ListVendor Advisory
https://lists.apache.org/thread.html/r4d71ae3ab96b589835b94ba7ac4cb88a704e7307bceefeab749366f3%40%3Cdev.nuttx.apache.org Mailing ListVendor Advisory
http://www.openwall.com/lists/oss-security/2020/12/09/5 Mailing ListThird Party Advisory
https://lists.apache.org/thread.html/r4d71ae3ab96b589835b94ba7ac4cb88a704e7307bceefeab749366f3%40%3Cdev.nuttx.apache.org Mailing ListVendor Advisory
https://lists.apache.org/thread.html/r4d71ae3ab96b589835b94ba7ac4cb88a704e7307bceefeab749366f3%40%3Cdev.nuttx.apache.org Mailing ListVendor Advisory
https://lists.apache.org/thread.html/r4d71ae3ab96b589835b94ba7ac4cb88a704e7307bceefeab749366f3%40%3Cdev.nuttx.apache.org Mailing ListVendor Advisory
https://lists.apache.org/thread.html/r4d71ae3ab96b589835b94ba7ac4cb88a704e7307bceefeab749366f3%40%3Cdev.nuttx.apache.org Mailing ListVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-17529), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.