7.5

CVE-2019-16866: canonical ubuntu_linux

CVSS: 7.5v3.1HighModified
AliasesALPINE-CVE-2019-16866MGASA-2019-0317DEBIAN-CVE-2019-16866
Published 03-10-2019Last modified 08-10-2026
Open JSON

Vulnerability summary

CVE-2019-16866 is a high (CVSS 7.5) vulnerability in canonical ubuntu_linux. EPSS estimates a 3.51% chance of exploitation in the next 30 days, higher than 89% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
3.51%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2024:11005-1

Timeline

  1. 03-10-2019
    PublishedVulnerability first disclosed.
  2. 08-10-2026
    Last modifiedVulnerability information updated.

Description

Unbound before 1.9.4 accesses uninitialized memory, which allows remote attackers to trigger a crash via a crafted NOTIFY query. The source IP address of the query must match an access-control rule.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

3.51%

Chance of exploitation in the next 30 days

Percentile

89%

Versus all other CVEs

30-day change

0.00 pp

From 3.51% on 19-09-2026

19-09-202619-10-2026
EPSS score
3.51%

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

Alpine1 product
  • unbound< 1.9.1-r3 | < 1.9.4-r0 | < 1.7.3-r1 | < 1.8.3-r2
Canonical1 product
Debian1 product
  • unbound< 1.9.4-1 | < 1.9.0-2+deb10u1
Mageia1 product
  • unbound< 1.9.4-1.mga7
Nlnetlabs1 product

5 vendors · 5 products

References

11 links
Show all 11 references