CVE-2020-19860

6.5 mediumEPSS 1.2%

Medium (6.5) in nlnetlabs ldns. EPSS 1.2% chance of exploitation in the next 30 days.

When ldns version 1.7.1 verifies a zone file, the ldns_rr_new_frm_str_internal function has a heap out of bounds read vulnerability. An attacker can leak information on the heap by constructing a zone file payload.

Severity

CVSS 3.1

6.5 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

EPSS: 1.2% chance of exploitation in the next 30 days; higher than 68% of CVEs (scores of 2026-10-31)
CWE: CWE-125
Published: 2022-01-21
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

nlnetlabs:ldns

References

https://github.com/NLnetLabs/ldns/commit/15d96206996bea969fbc918eb0a4a346f514b9f3
https://github.com/NLnetLabs/ldns/issues/50
https://github.com/NLnetLabs/ldns/commit/15d96206996bea969fbc918eb0a4a346f514b9f3
https://github.com/NLnetLabs/ldns/issues/50

Check your stack JSON