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Fencer Vulns
critical 10.0

CVE-2020-25066 json

A 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…

published 2020-12-22 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-17759

cvss
10.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
3.5%
EPSS 3.5% chance of exploitation in 30 days, percentile 89%
public exploits
0
none known

Summary

A 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/reset) or to possibly execute arbitrary code.

Patch / fix

  • treck tcp/ip 6.0.1.68

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-20-353-01 updated cvss 9.8

Treck TCP/IP Stack (Update A)

  • Treck Inc TCP/IP stack DHCPv6 <= 6.0.1.67 Treck Inc TCP/IP stack HTTP Server <= 6.0.1.67 Treck Inc TCP/IP stack IPv6 <= 6.0.1.67
    affected: mitigation “Treck recommends users apply the latest version of the affected products (Treck TCP/IP 6.0.1.68 or later versions). To obtain patches, email security@treck.com” treck.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

3.49% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 10.0 CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:C/UI:N
CNA 3.1 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.