日本レジストリサービス（JPRS）@JPRS_official
NSDの脆弱性情報が公開されました（CVE-2026-101337、CVE-2026-101338、CVE-2026-101339、CVE-2026-101341） https://jprs.jp/tech/security/2026-10-15-nsd.html
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CVE-2026-101338
LOWCVSS 8.7 · HIGHSignal is active with 1 mentions in latest observed window
Immediate actions
- Track advisory updates for patch or workaround availability
Recommended action window: Monitor and triage in normal cycle
NVD description
When a SVCB or HTTPS RR has filled the wire format RDATA up to the brim, another ECH parameter may overwrite the stack, and once beyond the limit, the base64 decoder can write attacker controlled data of unlimited size. Zone files which are written out by NSD itself, such as for zones for which the NSD instance is secondary, will not be formatted like this. The zone file must be fed to NSD directly, (but it could come, for example, from an operator controlled provisioning system).
0.0/ 10 priority
Sources & remediation
Other references
Weakness type (CWE)
CWE-121
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
Threat summary
- 1 mentions across 1 observed day
What's happening
- 1 total mentions across 1 day