CVE-2026-70405

Improper Validation of Specified Quantity in Input vulnerability in Erlang/OTP snmp allows a remote attacker to degrade availability by sending an SNMP message containing a BER INTEGER whose length field is arbitrarily large. snmp_pdus:dec_integer_notag/1 defaults its size limit to infinity, and do_dec_integer_notag/2 then accumulates the value across every declared byte with a recursive shift and bitwise or. Work grows superlinearly in the declared length because each operation acts on a progressively larger bignum. The size-limited variant dec_integer_notag/2 exists but is reached from only one call site, dec_snmp_version/1, which bounds the version field to ten bytes; the request identifier, error status and index, generic and specific trap fields, engine boots and time, and every varbind value decoded by dec_value/1 all use the unbounded form. The decode runs before the PDU is processed, so no valid request is required beyond what the deployment demands to accept the message at all. This issue affects OTP from OTP 17.0 before OTP 27.3.4.17, from OTP 28.0 before OTP 28.5.0.6, and from OTP 29.0 before OTP 29.0.6, corresponding to snmp from 4.25.1 before 5.18.2.1, from 5.19 before 5.20.2.2, and from 5.20.3 before 5.20.5. Whether OTP before OTP 17.0, corresponding to snmp before 4.25.1, is affected is unknown.

• CWE-1284

• https://cna.erlef.org/cves/CVE-2026-70405.html
• https://github.com/erlang/otp/commit/aba0fe8c2d700bf4ac94607cf7f00e53bbe4042d
• https://github.com/erlang/otp/commit/e3be1cfe9f6cedd0cd20d9905e05601dfb31c8aa
• https://github.com/erlang/otp/security/advisories/GHSA-q7cq-pfgf-5hr7
• https://osv.dev/vulnerability/EEF-CVE-2026-70405
• https://www.erlang.org/doc/system/versions.html#order-of-versions

Published

Sep 1, 2026

Last Modified

Sep 8, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-7039A security vulnerability has been detected in tufantunc ssh-…7.8
• CVE-2026-70395Improper Neutralization of Special Elements in Data Query Lo…2.1
• CVE-2026-70398A flaw was found in multicloud-integrations, a component of …9.6
• CVE-2026-70399Allocation of Resources Without Limits or Throttling vulnera…8.7
• CVE-2026-7040Text::Minify::XS versions from 0.3.0 before 0.7.8 for Perl h…7.5
• CVE-2026-70403XING CPTrans-ME-X contains a Use of Hard-coded Password (CWE…9.3
• CVE-2026-70408An incorrect authorization vulnerability exists in acmailer,…8.7
• CVE-2026-70409Improper Validation of Specified Quantity in Input vulnerabi…6.3
• CVE-2026-7041A vulnerability was detected in 666ghj MiroFish up to 0.1.2.…3.7
• CVE-2026-70410Use of Externally-Controlled Input to Select Classes or Code…8.8
• CVE-2026-70412Dell iDRAC9, versions prior to 7.20.30.50, and Dell iDRAC10,…3.5
• CVE-2026-70415Dell PowerStore SDNAS contains a Buffer Copy without Checkin…8.1