CVE-2026-94300Concurrent GSS-TSIG messages corrupt memory
Updated under an hour ago ()
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It affects ISC BIND 9. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.95%, higher than 61% of scored CVEs.
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Replaying GSS-TSIG signed UDP messages can result in memory corruption in "`named`". An attacker who can capture a previously signed UDP message can replay it while the negotiated TSIG key is still valid. By also sending crafted queries to a zone the attacker controls, the attacker may potentially achieve remote code execution. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.29, 9.21.0 through 9.21.26, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.29-S1.
- CVSS
- 8.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-415, CWE-362
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.95% (percentile 61)
- Assigned by
- isc
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 22, 2026
- First seen by InfoSec Signals
- Oct 21, 2026
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.