CVE-2026-75029: Message parser retains every identical singleton RDATA, enabling wire-to-work amplification
ISC · BIND 9
Vendor fix available · Affected: ISC BIND 9 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 41% of scored CVEs
DescriptionCVE.org
In a query response, an attacker may send `named` multiple copies of a record that should only exist once (such as an SOA record). If the RDATA is the same on all the copies, the record is appended to the in-memory RDATA set, which can cause increased memory usage of the negative cache and possibly lead to other memory attack vectors. 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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- ISC · BIND 9from 9.11.0 up to and including 9.18.50; from 9.20.0 up to and including 9.20.27; from 9.21.0 up to and including 9.21.25; from 9.11.3-S1 up to and including 9.18.50-S1; from 9.20.9-S1 up to and including 9.20.27-S1
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- ISC
- Published
- September 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-75029 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.