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CVE-2020-11899

61
FAUCET Score

CVE-2020-11899 is an IPv6 Out-of-bounds Read vulnerability in the Treck TCP/IP stack (versions prior to 6.0.1.66), impacting products from vendors like Dell and Treck. With a CVSS score of 5.4 (Medium), it can be exploited over an adjacent network with low attack complexity, potentially leading to information disclosure and denial of service. This vulnerability is actively exploited in the wild, as indicated by its presence in the KEV catalog, despite a lack of public exploit code in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage are notably high, suggesting significant awareness.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.0.1.66CPE matchmatch criteria
cpe:2.3:a:treck:tcp\/ip:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:dell:wyse_5050_all-in-one_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:dell:wyse_7030_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:dell:wyse_5030_firmware:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
18.56%
Probability of exploitation in next 30 days
EPSS Percentile
97.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Added to KEV · Mar 3, 2022
This CVE's current EPSS score of 0.1856 is in the 100th percentile among its peer group of 1,802 CVEs.

Social Chatter

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

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
cwe.mitre.org / data/definitions/125.html
Technical Description
jsof-tech.com / vulnerability-disclosure-policy
Broken LinkThird Party Advisory
security.netapp.com / advisory/ntap-20200625-0006
Third Party Advisory
tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-treck-ip-stack-JyBQ5GyC
Third Party Advisory
dell.com / support/article/de-de/sln321836/dell-response-to-the-ripple20-vulnerabilities
Third Party Advisory
intel.com / content/www/us/en/security-center/advisory/intel-sa-00295.html
Third Party Advisory
jsof-tech.com / ripple20
Broken LinkExploitThird Party Advisory
kb.cert.org / vuls/id/257161
Third Party AdvisoryUS Government Resource
kb.cert.org / vuls/id/257161
MitigationThird Party AdvisoryUS Government Resource
treck.com
ProductVendor Advisory
arubanetworks.com / assets/alert/ARUBA-PSA-2020-006.txt
Broken LinkThird Party Advisory