CVE-2026-40210
dnsdist: An out-of-bounds read might happen when SetMacAddrAction is used, potentially resulting in uninitialized memory being...
CVE-2026-40210 is fixed in dnsdist on 1 platform, first by DEBIAN-CVE-2026-40210, released June 26, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
4.8
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0074
54th percentile
An out-of-bounds read might happen when SetMacAddrAction is used, potentially resulting in uninitialized memory being sent over the network or a crash.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| dnsdist · Debian 13.5 (trixie) | 1.9.15-0+deb13u1 | DEBIAN-CVE-2026-40210 | Jun 26, 2026 |
| dnsdist · Debian 14 | 2.1.0-1 | DEBIAN-CVE-2026-40210 | Jun 26, 2026 |
| dnsdist · opensuse-leap 16.0 | 1.9.15-160000.1.1 | OPENSUSE-SU-2026:21533-1 | Aug 5, 2026 |
| dnsdist · sles 16.0 | 1.9.15-160000.1.1 | SUSE-SU-2026:23146-1 | Aug 5, 2026 |
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