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CVE-2020-17529

29
FAUCET Score

CVE-2020-17529 is an out-of-bounds write vulnerability in the TCP stack of Apache NuttX versions up to and including 9.1.0 and 10.0.0. An attacker can corrupt memory by providing an invalid fragmentation offset in the IP header, but only if CONFIG_EXPERIMENTAL and CONFIG_NET_TCP_REASSEMBLY build flags are enabled. This vulnerability carries a critical CVSS score of 9.8, indicating a high impact on confidentiality, integrity, and availability, with a network attack vector and low complexity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 9.1.0CPE matchmatch criteria
cpe:2.3:a:apache:nuttx:*:*:*:*:*:*:*:*
10.0.0CPE matchmatch criteria
cpe:2.3:a:apache:nuttx:10.0.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.85%
Probability of exploitation in next 30 days
EPSS Percentile
85.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0285 is in the 76th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

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