7.5

CVE-2018-10920: cz.nic knot-resolver Improper Input Validation

CVSS: 7.5v3.0HighModified
AliasesUBUNTU-CVE-2018-10920DEBIAN-CVE-2018-10920
Published 02-08-2018Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-10920 is a high (CVSS 7.5) Improper Input Validation vulnerability in cz.nic knot-resolver. EPSS estimates a 3.24% chance of exploitation in the next 30 days, higher than 88% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.0 (CVE.org)
EPSS score
3.24%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 02-08-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

Improper input validation bug in DNS resolver component of Knot Resolver before 2.4.1 allows remote attacker to poison cache.

CVSS metrics

7 scores · 4 sources · 3 versions

EPSS trend

Probability

3.24%

Chance of exploitation in the next 30 days

Percentile

88%

Versus all other CVEs

30-day change

0.00 pp

From 3.24% on 18-09-2026

18-09-202618-10-2026
EPSS score
3.24%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Cz.nic1 product
Debian1 product
  • knot-resolver< 2.4.1-1
Nic1 product
Ubuntu1 product
  • knot-resolverAll versions (No fix recorded)

4 vendors · 4 products

References

5 links