Skip to content
CVE Ledger
  • Newest CVEsPage
  • Recently added to KEVPage
  • Rising exploitation (EPSS)Page
  • Weekly digestPage
  • StatisticsPage
  • WatchlistPage
  • API docsPage
  • MCP serverPage
  • AboutPage
  • Data sourcesPage
  • Data statusPage
  • ChangelogPage
  • How it's builtPage
  • Support the projectPage

14 results

Back

CVE-2026-19941checkwildcard() accepts an out-of-zone NSEC as a wildcard-nonexistence proof

Description

An inapplicable NSEC record may be accepted by a `named` resolver as proof that no wildcard exists, which could allow an attacker at the same or an upstream level of the zone name to mask the existence of a victim's wildcard record. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.

Timeline

  1. ID reserved

    By isc

  2. · 32 days later

    Published

  3. · 1 day later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2026-19941, by who scored it
Scored byCVSSScoreVector
iscCNA (assigner)3.1Medium5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
NVDNVD · Awaiting Analysis3.1Medium5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS (exploitation in 30 days)
0.23% · top 87% of all CVEs (14 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.9.

Affected products

  • ISC · BIND 9

    • affected 9.11.0 – ≤ 9.18.50
    • affected 9.20.0 – ≤ 9.20.27
    • affected 9.21.0 – ≤ 9.21.25
    • affected 9.11.3-S1 – ≤ 9.18.50-S1
    • affected 9.20.9-S1 – ≤ 9.20.27-S1

What to do

Solution: Upgrade to the patched release most closely related to your current version of BIND 9: 9.20.29, 9.21.26, or 9.20.29-S1.

Workaround: No workarounds known.

Exploitation: This flaw was discovered in internal testing. We are not aware of any active exploits.

References

References3

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

CVE-2026-19941 badge
[![CVE-2026-19941](https://cveledger.app/badge/CVE-2026-19941.svg)](https://cveledger.app/cve/CVE-2026-19941)

Record last updated .