The Treck TCP/IP stack before 6.0.1.66 has an IPv6 Out-of-bounds Read.
- Published
- Jun 17, 2020
- Updated
- Jun 16, 2026
- EPSS
- 18.6% · 97th percentile
- CWE
- CWE-125
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Report tools
Action score
57
Plan
Add it to your regular patch cycle.
- CVSS
- 21 / 40 · 5.4 / 10
- CISA KEV
- 30 / 30 · Listed
- EPSS
- 6 / 30 · 18.6%
CISA SSVC decision
- Exploitation
- active
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Actively exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on Mar 3, 2022. That signals real attacks, not theory.
Remediation deadline for government agencies: Mar 17, 2022.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| treck | tcp\/ip | cpe:2.3:a:treck:tcp\/ip |
| dell | wyse 5050 all-in-one firmware | cpe:2.3:o:dell:wyse_5050_all-in-one_firmware |
| dell | wyse 5050 all-in-one | cpe:2.3:h:dell:wyse_5050_all-in-one |
| dell | wyse 7030 firmware | cpe:2.3:o:dell:wyse_7030_firmware |
| dell | wyse 7030 | cpe:2.3:h:dell:wyse_7030 |
| dell | wyse 5030 firmware | cpe:2.3:o:dell:wyse_5030_firmware |
| dell | wyse 5030 | cpe:2.3:h:dell:wyse_5030 |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- dell wyse 5030 firmwareall versions
- dell wyse 5050 all-in-one firmwareall versions
- dell wyse 7030 firmwareall versions
- treck tcp/ipbefore 6.0.1.66
Same product
treck: all recordsOther highest-scoring records for the same primary product.
- CVE-2020-11896The Treck TCP/IP stack before 6.0.1.66 allows Remote Code Execution, related to IPv4 tunneling.51Plan
- CVE-2020-11897The Treck TCP/IP stack before 5.0.1.35 has an Out-of-Bounds Write via multiple malformed IPv6 packets.43Plan
- CVE-2020-11901The Treck TCP/IP stack before 6.0.1.66 allows Remote Code execution via a single invalid DNS response.42Plan
- CVE-2020-11898The Treck TCP/IP stack before 6.0.1.66 improperly handles an IPv4/ICMPv4 Length Parameter Inconsistency, which might allow remote attackers 42Plan
- CVE-2020-25066A heap-based buffer overflow in the Treck HTTP Server component before 6.0.1.68 allows remote attackers to cause a denial of service (crash/40Plan
- CVE-2020-11900The Treck TCP/IP stack before 6.0.1.41 has an IPv4 tunneling Double Free.36Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
Weaponized
A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Published
- CISA KEV+624 d
- TodaySep 29, 2026+2296 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone on the same network segment can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- low · data or configuration can be modified
- Availability
- low · the service can be disrupted
- Attack vector
- Adjacent
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- Low
- Availability impact
- Low
Weakness class (CWE)
CWE-125 · Out-of-bounds ReadCVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-006.txt
- cwe.mitre.org/data/definitions/125.html
- jsof-tech.com/vulnerability-disclosure-policy/
- security.netapp.com/advisory/ntap-20200625-0006/
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-treck-ip-stack-JyBQ5GyC
- www.dell.com/support/article/de-de/sln321836/dell-response-to-the-ripple20-vulnerabilities
- www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00295.html
- www.kb.cert.org/vuls/id/257161
- www.kb.cert.org/vuls/id/257161/
- www.treck.com
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-11899
Vendor advisories and official records. Exploit/PoC links are deliberately left out.