CVE Explorer

CVE-2026-32792

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

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:5d207d1ca8424ab255a390eb3dda423341056558229f7ba8fb3af81434bb299e

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-166","description":"CWE-166: Improper Handling of Missing Special Element","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:05491a2e3cf5e6de44842417d44e5c843931c901ba8644ddd5ef9a891de4febb · sha256:567f49a4b21a1c95… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-125","description":"CWE-125: Out-of-bounds Read","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:05491a2e3cf5e6de44842417d44e5c843931c901ba8644ddd5ef9a891de4febb · sha256:567f49a4b21a1c95… · /containers/cna/problemTypes/0/descriptions/1

Affected products and versions

1 source assertion

{"defaultStatus":"unaffected","product":"Unbound","vendor":"NLnet Labs","versions":[{"lessThan":"1.25.1","status":"affected","version":"1.6.2","versionType":"semver"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:05491a2e3cf5e6de44842417d44e5c843931c901ba8644ddd5ef9a891de4febb · sha256:567f49a4b21a1c95… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"baseScore":4.6,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green","version":"4.0"},"metric_type":"cvssV4_0"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:05491a2e3cf5e6de44842417d44e5c843931c901ba8644ddd5ef9a891de4febb · sha256:567f49a4b21a1c95… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions

{"cweId":"CWE-166","description":"CWE-166: Improper Handling of Missing Special Element","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:05491a2e3cf5e6de44842417d44e5c843931c901ba8644ddd5ef9a891de4febb · sha256:567f49a4b21a1c95… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-125","description":"CWE-125: Out-of-bounds Read","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:05491a2e3cf5e6de44842417d44e5c843931c901ba8644ddd5ef9a891de4febb · sha256:567f49a4b21a1c95… · /containers/cna/problemTypes/0/descriptions/1

Source references

1 source assertion

{"tags":["vendor-advisory"],"url":"https://www.nlnetlabs.nl/downloads/unbound/CVE-2026-32792.txt"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:05491a2e3cf5e6de44842417d44e5c843931c901ba8644ddd5ef9a891de4febb · sha256:567f49a4b21a1c95… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

← Back to CVE Explorer