CVE-2020-27336: treck ipv6 Improper Input Validation
CVSS: 5.3v3.1MediumModified
Published 22-12-2020Last modified 30-09-2025
Vulnerability summary
CVE-2020-27336 is a medium (CVSS 5.3) Improper Input Validation vulnerability in treck ipv6. EPSS estimates a 1.73% chance of exploitation in the next 30 days, higher than 77.1% of scored vulnerabilities.
CVSS score
5.3/10
010
Medium · v3.1 (NVD)EPSS score
1.73%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 22-12-2020PublishedVulnerability first disclosed.
- 30-09-2025Last modifiedVulnerability information updated.
Description
An issue was discovered in Treck IPv6 before 6.0.1.68. Improper input validation in the IPv6 component when handling a packet sent by an unauthenticated remote attacker could result in an out-of-bounds read of up to three bytes via network access.
CVSS metrics
3 scores · 2 sources · 2 versionsMedium 5.3Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NSources2 sources · 3.7–5.3
- CVE.orgCNA3.7LowCVSS:3.1/AC:H/AV:N/A:N/C:L/I:N/PR:N/S:U/UI:NDiffers
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:N/A:NSourcesSingle source
EPSS trend
Probability
1.73%
Chance of exploitation in the next 30 days
Percentile
77%
Versus all other CVEs
30-day change
0.00 pp
From 1.73% on 18-09-2026
18-09-202618-10-2026
EPSS score1.73%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
- CWE-125Out-of-bounds ReadThe product reads data past the end, or before the beginning, of the intended buffer.
Affected systems
Treck1 product
- ipv6< 6.0.1.68
1 vendor · 1 product