CVE-2026-33611: powerdns authoritative Integer Overflow or Wraparound
CVSS: 6.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-33611DEBIAN-CVE-2026-33611
Published 22-04-2026Last modified 22-04-2026
Vulnerability summary
CVE-2026-33611 is a medium (CVSS 6.5) Integer Overflow or Wraparound vulnerability in powerdns authoritative. EPSS estimates a 0.81% chance of exploitation in the next 30 days, higher than 56.1% of scored vulnerabilities.
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)EPSS score
0.81%
0%100%
Low · +0.39 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 22-04-2026PublishedVulnerability first disclosed.
- 22-04-2026Last modifiedVulnerability information updated.
Description
An operator allowed to use the REST API can cause the Authoritative server to produce invalid HTTPS or SVCB record data, which can in turn cause LMDB database corruption, if using the LMDB backend.
CVSS metrics
4 scores · 4 sources · 1 versionMedium 6.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:HSources4 sources · 4.9–6.5
- OSV · UbuntuEcosystem advisory · calculated4.9MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:HDiffers
- OSV · DebianEcosystem advisory · calculated4.9MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:HDiffers
- NVDNIST4.9MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:HDiffers
EPSS trend
Probability
0.81%
Chance of exploitation in the next 30 days
Percentile
56%
Versus all other CVEs
30-day change
+0.39 pp
From 0.42% on 20-09-2026
20-09-202620-10-2026
EPSS score0.81%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian1 product
- pdnsAll versions (No fix recorded) | < 4.9.14-0+deb13u1 | < 5.0.4-1
Powerdns1 product
- authoritative≥ 4.9.0, < 4.9.14 | ≥ 5.0.0, < 5.0.4
Ubuntu1 product
- pdnsAll versions (No fix recorded)
3 vendors · 3 products
