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NVD description
Generation of Predictable Numbers or Identifiers vulnerability in Erlang/OTP kernel (inet_res, inet_db modules) allows DNS Cache Poisoning. The built-in DNS resolver (inet_res) uses a sequential, process-global 16-bit transaction ID for UDP queries and does not implement source port randomization. Response validation relies almost entirely on this ID, making DNS cache poisoning practical for an attacker who can observe one query or predict the next ID. This conflicts with RFC 5452 recommendations for mitigating forged DNS answers. inet_res is intended for use in trusted network environments and with trusted recursive resolvers. Earlier documentation did not clearly state this deployment assumption, which could lead users to deploy the resolver in environments where spoofed DNS responses are possible. This vulnerability is associated with program files lib/kernel/src/inet_db.erl and lib/kernel/src/inet_res.erl. This issue affects OTP from OTP 17.0 before OTP 28.4.2, OTP 27.3.4.10 and OTP 26.2.5.19, corresponding to kernel from 3.0 before 10.6.2, 10.2.7.4 and 9.2.4.11.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
AVAILABLE
Momentum
STABLE
If you run products in this scope, you should treat this CVE as relevant to your environment.
CVE-2026-28810 Generation of Predictable Numbers or Identifiers vulnerability in Erlang/OTP kernel (inet_res, inet_db modules) allows DNS Cache Poisoning. The built-in DNS resolver… https://www.cve.org/CVERecord?id=CVE-2026-28810
Post summary
The text announces CVE-2026-28810 in Erlang/OTP, detailing its exploit potential for DNS cache poisoning, but does not mention PoC, exploitation, or mitigation.
CVE-2026-28810 DNS Cache Poisoning via Predictable Transaction IDs in Erlang/OTP Kernel https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-28810
Post summary
The text announces a DNS cache poisoning vulnerability in Erlang/OTP caused by predictable transaction IDs, with technical details but no evidence of exploitation, fixes, or PoC.
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| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | erlang | erlang\/otp | - | - | - |