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 until OTP 28.4.2, 27.3.4.10 and 26.2.5.19 corresponding to kernel from 3.0 until 10.6.2, 10.2.7.4 and 9.2.4.11.
総合評価: CVE-2026-28810 は低リスク(31.8/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 0.27%、18 パーセンタイル) 推奨対応: 悪用情報と EPSS の推移を監視し、必要に応じて優先度を見直してください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置(高いほど相対的に深刻)を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ(新 − 旧) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.04% | 0.27% | +0.23% |
| 2 | 2026-04-24 | 0.05% | 0.04% | -0.01% |
| 3 | 2026-04-07 | — | 0.05% | — |
EPSS の全履歴 (全 3 件)
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 6.3 | 4.0 | MEDIUM |
|
— | — | 6b3ad84c-e1a6-4bf7-a703-f496b71e49db |
| 3.7 | 3.1 | LOW |
|
2.2 | 1.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2026-28810 not yet assigned priority: Debian including 1 source packages (erlang), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 3, resolved 2. | https://security-tracker.debian.org/tracker/CVE-2026-28810 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2026-28810 |
suse
|
medium | — | https://www.suse.com/security/cve/CVE-2026-28810/ |
ubuntu
|
medium | CVE-2026-28810 medium priority: Ubuntu including 1 source packages (erlang), 8 status rows across 8 suites (bionic, focal, jammy, noble, questing, trusty, upstream, xenial): needs-triage 8. | https://ubuntu.com/security/CVE-2026-28810 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| erlang | erlang\/otp | >= 17.0, < 26.2.5.19 | cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:* |
| erlang | erlang\/otp | >= 27.0, < 27.3.4.10 | cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:* |
| erlang | erlang\/otp | >= 28.0, < 28.4.2 | cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:* |