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CVE-2020-17528

Apache NuttX (incubating) Out of Bound Write from invalid TCP Urgent length

9.1 Critical

CVE-2020-17528 is a critical vulnerability (CVSS 9.1) in Apache Nuttx, published December 9, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.17%, the 88th percentile. No source names a fixed version.

What does this mean?
Severity
9.1 CriticalCVSS 3.1, NVD
Exploit chance
3.17%EPSS, 88th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
No fix listedNo source names one

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 arbitrary urgent data pointer offsets within TCP packets including beyond the length of the packet.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
High

Exploit likelihood

3.17%Up 1.2 points since Apr 14, 2021
90%50%10%1%

Affected products

What each source reports

NVD Score used9.1

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 arbitrary urgent data pointer offsets within TCP packets including beyond the length of the packet.

Record
CVE-2020-17528
CVSS 3.1
9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CVSS 2.0
6.4 MediumAV:N/AC:L/Au:N/C:P/I:N/A:P
Weakness
CWE-787
Updated
2026-11-02
CVE ListNo score

Apache NuttX (incubating) Out of Bound Write from invalid TCP Urgent length

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 arbitrary urgent data pointer offsets within TCP packets including beyond the length of the packet.

Record
CVE-2020-17528
Weakness
CWE-787
Updated
2026-11-02
EUVDEUVD-2020-94640.0

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 arbitrary urgent data pointer offsets within TCP packets including beyond the length of the packet.

Record
EUVD-2020-9464
CVSS
0.0 NoneCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Updated
2026-11-03
GitHub AdvisoriesGHSA-36mq-qwm2-6rppNo score

Out-of-bounds Write vulnerability in TCP stack of Apache NuttX (incubating) versions up to and...

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 arbitrary urgent data pointer offsets within TCP packets including beyond the length of the packet.

Record
GHSA-36mq-qwm2-6rpp
Weakness
CWE-787
Updated
2026-11-02
OSV9.1

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 arbitrary urgent data pointer offsets within TCP packets including beyond the length of the packet.

Record
CVE-2020-17528
CVSS 3.1
9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Updated
2026-11-02

History

History
RecordedChangedSources
facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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