8.2

CVE-2026-24028: powerdns dnsdist Buffer Over-read

CVSS: 8.2v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-24028DEBIAN-CVE-2026-24028
Published 31-03-2026Last modified 31-03-2026
Open JSON

Vulnerability summary

CVE-2026-24028 is a high (CVSS 8.2) Buffer Over-read vulnerability in powerdns dnsdist. EPSS estimates a 1.03% chance of exploitation in the next 30 days, higher than 63% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.2/10
010
High · v3.1 (NVD)
EPSS score
1.03%
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 4 · Related 4
OPENSUSE-SU-2026:10473-1OPENSUSE-SU-2026:21015-1SUSE-SU-2026:1618-1SUSE-SU-2026:22319-1

Timeline

  1. 31-03-2026
    PublishedVulnerability first disclosed.
  2. 31-03-2026
    Last modifiedVulnerability information updated.

Description

An attacker might be able to trigger an out-of-bounds read by sending a crafted DNS response packet, when custom Lua code uses newDNSPacketOverlay to parse DNS packets. The out-of-bounds read might trigger a crash, leading to a denial of service, or access unrelated memory, leading to potential information disclosure.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

1.03%

Chance of exploitation in the next 30 days

Percentile

63%

Versus all other CVEs

30-day change

0.00 pp

From 1.03% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.03%

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

Debian1 product
  • dnsdistAll versions (No fix recorded) | < 1.9.14-0+deb13u1 | < 2.0.3-1
Powerdns1 product
  • dnsdist≥ 1.9.0, < 1.9.12 | ≥ 2.0.0, < 2.0.3
Ubuntu1 product
  • dnsdistAll versions (No fix recorded)

3 vendors · 3 products

References

5 links