CVE-2026-32792

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-05-20. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.3Exploit: NoneExposed: 0

A fix is available — apply it.

NLnet Labs Unbound 1.6.2 up to and including version 1.25.0 has a denial of service vulnerability when compiled with DNSCrypt support ('--enable-dnscrypt'). A bad DNSCrypt query could underflow Unbound's DNSCrypt packet reading procedure that may lead to heap overflow. A malicious actor can exploit the vulnerability with a single bad DNSCrypt query that its decrypted plaintext consists entirely of '0x00' bytes and does not contain the expected '0x80' marker. Unbound would then start reading more bytes than necessary until it finds a non-'0x00' byte. Based on the underlying memory allocator and the memory layout, it could lead to heap overflow while reading followed by a crash. Likelihood of a crash is low, since it relies heavily on the underlying memory allocator and the memory layout. If the heap overflow does not happen, Unbound's later packet checks will deny the packet. Unbound 1.25.1 contains a patch with a fix to bound reading in the given buffer space.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity53% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
26.1%
KEV
Not listed

Published

May 20, 2026

Last Modified

May 20, 2026

Advisory Details (1)

Auto-updated May 20, 2026
No patch confirmed yet.
generic
https://www.nlnetlabs.nl/downloads/unbound/CVE-2026-32792.txt

Vendor Advisories for CVE-2026-32792(3)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuunbound-host (1.24.2-1ubuntu2.1) @ resolute2026-06-29ubuntu
redhatunbound-main-1.25.1-1.hum12026-05-23redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 14× in last 7d / 54× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 150 total refreshes for this CVE.

  1. 2026-07-23 03:09 UTCEG score recompute
  2. 2026-07-22 14:08 UTCEPSS rescore
  3. 2026-07-21 15:24 UTCEPSS rescore
  4. 2026-07-21 15:24 UTCEPSS rescore
  5. 2026-07-20 17:08 UTCEPSS rescore
  6. 2026-07-20 17:08 UTCEPSS rescore
  7. 2026-07-19 14:31 UTCEPSS rescore
  8. 2026-07-19 14:31 UTCEPSS rescore
  9. 2026-07-19 02:29 UTCEPSS rescore
  10. 2026-07-18 10:04 UTCEPSS rescore
  11. 2026-07-18 10:04 UTCEPSS rescore
  12. 2026-07-17 22:59 UTCOSV refresh
  13. 2026-07-16 17:03 UTCEPSS rescore
  14. 2026-07-16 17:03 UTCEPSS rescore
  15. 2026-07-15 16:57 UTCEPSS rescore
  16. 2026-07-15 16:57 UTCEPSS rescore
  17. 2026-07-15 02:00 UTCEPSS rescore
  18. 2026-07-15 02:00 UTCEPSS rescore
  19. 2026-07-13 22:30 UTCEPSS rescore
  20. 2026-07-13 06:13 UTCEPSS rescore
  21. 2026-07-13 06:13 UTCEPSS rescore
  22. 2026-07-12 05:46 UTCEPSS rescore
  23. 2026-07-11 08:27 UTCEPSS rescore
  24. 2026-07-09 19:10 UTCEPSS rescore
  25. 2026-07-08 15:15 UTCEPSS rescore
Show 75 more
  1. 2026-07-07 13:46 UTCEPSS rescore
  2. 2026-07-06 16:27 UTCEPSS rescore
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-05 02:30 UTCEPSS rescore
  7. 2026-07-04 06:31 UTCEPSS rescore
  8. 2026-07-01 15:06 UTCEPSS rescore
  9. 2026-06-30 23:22 UTCEPSS rescore
  10. 2026-06-29 20:30 UTCVendor advisory
  11. 2026-06-29 20:30 UTCGHSA enrichment
  12. 2026-06-29 14:06 UTCEPSS rescore
  13. 2026-06-29 14:06 UTCEPSS rescore
  14. 2026-06-28 14:07 UTCEPSS rescore
  15. 2026-06-28 14:07 UTCEPSS rescore
  16. 2026-06-28 04:56 UTCEPSS rescore
  17. 2026-06-28 04:56 UTCEPSS rescore
  18. 2026-06-27 21:01 UTCVendor advisory
  19. 2026-06-27 21:01 UTCGHSA enrichment
  20. 2026-06-27 03:08 UTCEPSS rescore
  21. 2026-06-26 19:35 UTCVendor advisory
  22. 2026-06-26 19:35 UTCGHSA enrichment
  23. 2026-06-25 16:15 UTCVendor advisory
  24. 2026-06-25 16:15 UTCGHSA enrichment
  25. 2026-06-25 13:49 UTCEPSS rescore
  26. 2026-06-25 13:49 UTCEPSS rescore
  27. 2026-06-24 14:05 UTCEPSS rescore
  28. 2026-06-23 21:33 UTCEPSS rescore
  29. 2026-06-23 21:33 UTCEPSS rescore
  30. 2026-06-22 14:25 UTCEPSS rescore
  31. 2026-06-22 14:25 UTCEPSS rescore
  32. 2026-06-21 14:56 UTCEPSS rescore
  33. 2026-06-21 14:56 UTCEPSS rescore
  34. 2026-06-21 01:59 UTCEPSS rescore
  35. 2026-06-19 19:25 UTCEPSS rescore
  36. 2026-06-19 19:25 UTCEPSS rescore
  37. 2026-06-18 17:52 UTCEPSS rescore
  38. 2026-06-18 17:52 UTCEPSS rescore
  39. 2026-06-18 04:24 UTCVendor advisory
  40. 2026-06-18 04:23 UTCGHSA enrichment
  41. 2026-06-17 17:53 UTCEPSS rescore
  42. 2026-06-17 03:00 UTCVendor advisory
  43. 2026-06-17 02:59 UTCGHSA enrichment
  44. 2026-06-16 17:52 UTCEPSS rescore
  45. 2026-06-16 01:36 UTCVendor advisory
  46. 2026-06-16 01:36 UTCGHSA enrichment
  47. 2026-06-15 17:49 UTCEPSS rescore
  48. 2026-06-14 23:55 UTCVendor advisory
  49. 2026-06-14 23:55 UTCGHSA enrichment
  50. 2026-06-14 23:18 UTCEPSS rescore
  51. 2026-06-13 23:00 UTCEPSS rescore
  52. 2026-06-13 22:31 UTCVendor advisory
  53. 2026-06-13 22:31 UTCGHSA enrichment
  54. 2026-06-12 23:12 UTCEPSS rescore
  55. 2026-06-12 23:12 UTCEPSS rescore
  56. 2026-06-12 18:12 UTCVendor advisory
  57. 2026-06-12 18:12 UTCGHSA enrichment
  58. 2026-06-11 16:46 UTCVendor advisory
  59. 2026-06-11 16:46 UTCGHSA enrichment
  60. 2026-06-11 14:00 UTCEPSS rescore
  61. 2026-06-10 22:18 UTCEPSS rescore
  62. 2026-06-10 15:24 UTCVendor advisory
  63. 2026-06-10 15:24 UTCGHSA enrichment
  64. 2026-06-10 13:22 UTCEPSS rescore
  65. 2026-06-09 14:01 UTCVendor advisory
  66. 2026-06-09 14:01 UTCGHSA enrichment
  67. 2026-06-08 14:17 UTCEPSS rescore
  68. 2026-06-08 14:17 UTCEPSS rescore
  69. 2026-06-08 12:37 UTCVendor advisory
  70. 2026-06-08 12:37 UTCGHSA enrichment
  71. 2026-06-07 15:25 UTCEPSS rescore
  72. 2026-06-07 15:25 UTCEPSS rescore
  73. 2026-06-07 15:25 UTCEPSS rescore
  74. 2026-06-07 11:14 UTCVendor advisory
  75. 2026-06-07 11:14 UTCGHSA enrichment

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-32792?
CVE-2026-32792 is a medium vulnerability published on May 20, 2026. NLnet Labs Unbound 1.6.2 up to and including version 1.25.0 has a denial of service vulnerability when compiled with DNSCrypt support ('--enable-dnscrypt'). A bad DNSCrypt query could underflow Unbound's DNSCrypt packet reading procedure that may lead to heap overflow. A malicious actor can exploit…
When was CVE-2026-32792 disclosed?
CVE-2026-32792 was first published in the National Vulnerability Database on May 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-32792 actively exploited?
CVE-2026-32792 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 26.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-32792?
CVE-2026-32792 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-32792?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-32792, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-32792

Explore →

Is Your Infrastructure Affected by CVE-2026-32792?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs