CVE-2026-70405 (GCVE-0-2026-70405)
Vulnerability from cvelistv5 – Published: 2026-09-01 14:50 – Updated: 2026-09-01 18:10
VLAI
EPSS
VEX
Title
snmp BER INTEGER decoder applies no size limit to attacker-supplied integer fields
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 18:09 UTC
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/erlang/otp/security/advisories… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-70405.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-70405 | related |
| https://www.erlang.org/doc/system/versions.html#o… | x_version-scheme |
| https://github.com/erlang/otp/commit/aba0fe8c2d70… | patch |
| https://github.com/erlang/otp/commit/e3be1cfe9f6c… | patch |
Impacted products
3 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Erlang | OTP |
Unknown:
0 , < 17.0
(otp)
Affected: 17.0 , < 27.3.4.17 (otp) Affected: 28.0 , < 28.5.0.6 (otp) Affected: 29.0 , < 29.0.6 (otp) cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:* |
||
| Erlang | OTP |
Unknown:
0 , < 4.25.1
(otp)
Affected: 4.25.1 , < 5.18.2.1 (otp) Affected: 5.19 , < 5.20.2.2 (otp) Affected: 5.20.3 , < 5.20.5 (otp) cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:* |
||
| Erlang | OTP |
Affected:
84adefa331c4159d432d22840663c38f155cd4c1 , < *
(git)
cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:* |
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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.\\n\\nThis issue affects OTP from OTP\u00a017.0 before OTP\u00a027.3.4.17, from OTP\u00a028.0 before OTP\u00a028.5.0.6, and from OTP\u00a029.0 before OTP\u00a029.0.6, 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. 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unknown.\"}],\"affected\":[{\"source\":\"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\",\"affectedData\":[{\"vendor\":\"Erlang\",\"product\":\"OTP\",\"defaultStatus\":\"unaffected\",\"packageName\":\"otp\",\"cpes\":[\"cpe:2.3:a:erlang:erlang\\\\/otp:*:*:*:*:*:*:*:*\"],\"modules\":[\"snmp_pdus\"],\"programFiles\":[\"lib/snmp/src/misc/snmp_pdus.erl\"],\"programRoutines\":[{\"name\":\"snmp_pdus:dec_integer_notag/1\"},{\"name\":\"snmp_pdus:do_dec_integer_notag/2\"},{\"name\":\"snmp_pdus:dec_value/1\"}],\"packageURL\":\"pkg:sid/erlang.org/otp\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"17.0\",\"versionType\":\"otp\",\"status\":\"unknown\"},{\"version\":\"17.0\",\"lessThan\":\"27.3.4.17\",\"versionType\":\"otp\",\"status\":\"affected\"},{\"version\":\"28.0\",\"lessThan\":\"28.5.0.6\",\"versionType\":\"otp\",\"status\":\"affected\"},{\"version\":\"29.0\",\"lessThan\":\"29.0.6\",\"versionType\":\"otp\",\"status\":\"affected\"}]},{\"vendor\":\"Erlang\",\"product\":\"OTP\",\"defaultStatus\":\"unaffected\",\"packageName\":\"snmp\",\"cpes\":[\"cpe:2.3:a:erlang:erlang\\\\/otp:*:*:*:*:*:*:*:*\"],\"modules\":[\"snmp_pdus\"],\"programFiles\":[\"src/misc/snmp_pdus.erl\"],\"programRoutines\":[{\"name\":\"snmp_pdus:dec_integer_notag/1\"},{\"name\":\"snmp_pdus:do_dec_integer_notag/2\"},{\"name\":\"snmp_pdus:dec_value/1\"}],\"repo\":\"https://github.com/erlang/otp\",\"packageURL\":\"pkg:otp/snmp\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"4.25.1\",\"versionType\":\"otp\",\"status\":\"unknown\"},{\"version\":\"4.25.1\",\"lessThan\":\"5.18.2.1\",\"versionType\":\"otp\",\"status\":\"affected\"},{\"version\":\"5.19\",\"lessThan\":\"5.20.2.2\",\"versionType\":\"otp\",\"status\":\"affected\"},{\"version\":\"5.20.3\",\"lessThan\":\"5.20.5\",\"versionType\":\"otp\",\"status\":\"affected\"}]},{\"vendor\":\"Erlang\",\"product\":\"OTP\",\"defaultStatus\":\"unaffected\",\"collectionURL\":\"https://github.com\",\"packageName\":\"erlang/otp\",\"cpes\":[\"cpe:2.3:a:erlang:erlang\\\\/otp:*:*:*:*:*:*:*:*\"],\"modules\":[\"snmp_pdus\"],\"programFiles\":[\"lib/snmp/src/misc/snmp_pdus.erl\"],\"programRoutines\":[{\"name\":\"snmp_pdus:dec_integer_notag/1\"},{\"name\":\"snmp_pdus:do_dec_integer_notag/2\"},{\"name\":\"snmp_pdus:dec_value/1\"}],\"repo\":\"https://github.com/erlang/otp\",\"packageURL\":\"pkg:github/erlang/otp\",\"versions\":[{\"version\":\"84adefa331c4159d432d22840663c38f155cd4c1\",\"lessThan\":\"*\",\"versionType\":\"git\",\"status\":\"affected\",\"changes\":[{\"at\":\"aba0fe8c2d700bf4ac94607cf7f00e53bbe4042d\",\"status\":\"unaffected\"},{\"at\":\"e3be1cfe9f6cedd0cd20d9905e05601dfb31c8aa\",\"status\":\"unaffected\"}]}]}]}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X\",\"baseScore\":6.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"PRESENT\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"NONE\",\"vulnIntegrityImpact\":\"NONE\",\"vulnAvailabilityImpact\":\"LOW\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"NOT_DEFINED\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-09-01T18:09:46.379754Z\",\"id\":\"CVE-2026-70405\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-1284\"}]}],\"references\":[{\"url\":\"https://cna.erlef.org/cves/CVE-2026-70405.html\",\"source\":\"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\"},{\"url\":\"https://github.com/erlang/otp/commit/aba0fe8c2d700bf4ac94607cf7f00e53bbe4042d\",\"source\":\"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\"},{\"url\":\"https://github.com/erlang/otp/commit/e3be1cfe9f6cedd0cd20d9905e05601dfb31c8aa\",\"source\":\"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\"},{\"url\":\"https://github.com/erlang/otp/security/advisories/GHSA-q7cq-pfgf-5hr7\",\"source\":\"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\"},{\"url\":\"https://osv.dev/vulnerability/EEF-CVE-2026-70405\",\"source\":\"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\"},{\"url\":\"https://www.erlang.org/doc/system/versions.html#order-of-versions\",\"source\":\"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\"}]}}",
"suse_vex": {
"aggregate_severity": "low",
"current_release_date": "2026-09-02T11:47:21Z",
"cve": "CVE-2026-70405",
"id": "CVE-2026-70405",
"initial_release_date": "2026-09-02T11:47:21Z",
"product_status:known_affected": "70",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-70405",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-70405.json",
"version": "2"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-70405\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-09-01T18:09:46.379754Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-09-01T18:10:04.295Z\"}}], \"cna\": {\"title\": \"snmp BER INTEGER decoder applies no size limit to attacker-supplied integer fields\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Eric Meadows-J\\u00f6nsson\"}, {\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Jonatan M\\u00e4nnchen / EEF\"}, {\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Peter Ullrich\"}, {\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Jos\\u00e9 Valim\"}, {\"lang\": \"en\", \"type\": \"remediation developer\", \"value\": \"Konrad Pietrzak / Ericsson\"}], \"impacts\": [{\"capecId\": \"CAPEC-231\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-231 Oversized Serialized Data Payloads\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"Safety\": \"NOT_DEFINED\", \"version\": \"4.0\", \"Recovery\": \"NOT_DEFINED\", \"baseScore\": 6.3, \"Automatable\": \"NOT_DEFINED\", \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"PRESENT\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"NONE\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"LOW\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"NONE\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:erlang:erlang\\\\/otp:*:*:*:*:*:*:*:*\"], \"vendor\": \"Erlang\", \"modules\": [\"snmp_pdus\"], \"product\": \"OTP\", \"versions\": [{\"status\": \"unknown\", \"version\": \"0\", \"lessThan\": \"17.0\", \"versionType\": \"otp\"}, {\"status\": \"affected\", \"version\": \"17.0\", \"lessThan\": \"27.3.4.17\", \"versionType\": \"otp\"}, {\"status\": \"affected\", \"version\": \"28.0\", \"lessThan\": \"28.5.0.6\", \"versionType\": \"otp\"}, {\"status\": \"affected\", \"version\": \"29.0\", \"lessThan\": \"29.0.6\", \"versionType\": \"otp\"}], \"packageURL\": \"pkg:sid/erlang.org/otp\", \"packageName\": \"otp\", \"programFiles\": [\"lib/snmp/src/misc/snmp_pdus.erl\"], \"defaultStatus\": \"unaffected\", \"programRoutines\": [{\"name\": \"snmp_pdus:dec_integer_notag/1\"}, {\"name\": \"snmp_pdus:do_dec_integer_notag/2\"}, {\"name\": \"snmp_pdus:dec_value/1\"}]}, {\"cpes\": [\"cpe:2.3:a:erlang:erlang\\\\/otp:*:*:*:*:*:*:*:*\"], \"repo\": \"https://github.com/erlang/otp\", \"vendor\": \"Erlang\", \"modules\": [\"snmp_pdus\"], \"product\": \"OTP\", \"versions\": [{\"status\": \"unknown\", \"version\": \"0\", \"lessThan\": \"4.25.1\", \"versionType\": \"otp\"}, {\"status\": \"affected\", \"version\": \"4.25.1\", \"lessThan\": \"5.18.2.1\", \"versionType\": \"otp\"}, {\"status\": \"affected\", \"version\": \"5.19\", \"lessThan\": \"5.20.2.2\", \"versionType\": \"otp\"}, {\"status\": \"affected\", \"version\": \"5.20.3\", \"lessThan\": \"5.20.5\", \"versionType\": \"otp\"}], \"packageURL\": \"pkg:otp/snmp\", \"packageName\": \"snmp\", \"programFiles\": [\"src/misc/snmp_pdus.erl\"], \"defaultStatus\": \"unaffected\", \"programRoutines\": [{\"name\": \"snmp_pdus:dec_integer_notag/1\"}, {\"name\": \"snmp_pdus:do_dec_integer_notag/2\"}, {\"name\": \"snmp_pdus:dec_value/1\"}]}, {\"cpes\": [\"cpe:2.3:a:erlang:erlang\\\\/otp:*:*:*:*:*:*:*:*\"], \"repo\": \"https://github.com/erlang/otp\", \"vendor\": \"Erlang\", \"modules\": [\"snmp_pdus\"], \"product\": \"OTP\", \"versions\": [{\"status\": \"affected\", \"changes\": [{\"at\": \"aba0fe8c2d700bf4ac94607cf7f00e53bbe4042d\", \"status\": \"unaffected\"}, {\"at\": \"e3be1cfe9f6cedd0cd20d9905e05601dfb31c8aa\", \"status\": \"unaffected\"}], \"version\": \"84adefa331c4159d432d22840663c38f155cd4c1\", \"lessThan\": \"*\", \"versionType\": \"git\"}], \"packageURL\": \"pkg:github/erlang/otp\", \"packageName\": \"erlang/otp\", \"programFiles\": [\"lib/snmp/src/misc/snmp_pdus.erl\"], \"collectionURL\": \"https://github.com\", \"defaultStatus\": \"unaffected\", \"programRoutines\": [{\"name\": \"snmp_pdus:dec_integer_notag/1\"}, {\"name\": \"snmp_pdus:do_dec_integer_notag/2\"}, {\"name\": \"snmp_pdus:dec_value/1\"}]}], \"references\": [{\"url\": \"https://github.com/erlang/otp/security/advisories/GHSA-q7cq-pfgf-5hr7\", \"tags\": [\"vendor-advisory\", \"related\"]}, {\"url\": \"https://cna.erlef.org/cves/CVE-2026-70405.html\", \"tags\": [\"related\"]}, {\"url\": \"https://osv.dev/vulnerability/EEF-CVE-2026-70405\", \"tags\": [\"related\"]}, {\"url\": \"https://www.erlang.org/doc/system/versions.html#order-of-versions\", \"tags\": [\"x_version-scheme\"]}, {\"url\": \"https://github.com/erlang/otp/commit/aba0fe8c2d700bf4ac94607cf7f00e53bbe4042d\", \"tags\": [\"patch\"]}, {\"url\": \"https://github.com/erlang/otp/commit/e3be1cfe9f6cedd0cd20d9905e05601dfb31c8aa\", \"tags\": [\"patch\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"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.\\n\\nsnmp_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.\\n\\nThis issue affects OTP from OTP\\u00a017.0 before OTP\\u00a027.3.4.17, from OTP\\u00a028.0 before OTP\\u00a028.5.0.6, and from OTP\\u00a029.0 before OTP\\u00a029.0.6, 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\\u00a017.0, corresponding to snmp before 4.25.1, is affected is unknown.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eImproper 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.\u003c/p\u003e\\n\u003cp\u003e\u003ccode\u003esnmp_pdus:dec_integer_notag/1\u003c/code\u003e defaults its size limit to \u003ccode\u003einfinity\u003c/code\u003e, and \u003ccode\u003edo_dec_integer_notag/2\u003c/code\u003e 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 \u003ccode\u003edec_integer_notag/2\u003c/code\u003e exists but is reached from only one call site, \u003ccode\u003edec_snmp_version/1\u003c/code\u003e, 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 \u003ccode\u003edec_value/1\u003c/code\u003e 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.\u003c/p\u003e\\n\u003cp\u003eThis issue affects OTP from OTP\u0026nbsp;17.0 before OTP\u0026nbsp;27.3.4.17, from OTP\u0026nbsp;28.0 before OTP\u0026nbsp;28.5.0.6, and from OTP\u0026nbsp;29.0 before OTP\u0026nbsp;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\u0026nbsp;17.0, corresponding to snmp before 4.25.1, is affected is unknown.\u003c/p\u003e\", \"base64\": false}, {\"type\": \"text/markdown\", \"value\": \"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.\\n\\n`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.\\n\\nThis issue affects OTP from OTP\\u00a017.0 before OTP\\u00a027.3.4.17, from OTP\\u00a028.0 before OTP\\u00a028.5.0.6, and from OTP\\u00a029.0 before OTP\\u00a029.0.6, 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\\u00a017.0, corresponding to snmp before 4.25.1, is affected is unknown.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-1284\", \"description\": \"CWE-1284 Improper Validation of Specified Quantity in Input\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:erlang:erlang\\\\/otp:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"27.3.4.17\"}, {\"criteria\": \"cpe:2.3:a:erlang:erlang\\\\/otp:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"28.5.0.6\", \"versionStartIncluding\": \"28.0\"}, {\"criteria\": \"cpe:2.3:a:erlang:erlang\\\\/otp:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"29.0.6\", \"versionStartIncluding\": \"29.0\"}], \"operator\": \"OR\"}], \"operator\": \"AND\"}], \"providerMetadata\": {\"orgId\": \"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\", \"shortName\": \"EEF\", \"dateUpdated\": \"2026-09-01T14:50:34.263Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-70405\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-09-01T18:10:13.162Z\", \"dateReserved\": \"2026-08-06T11:45:02.140Z\", \"assignerOrgId\": \"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\", \"datePublished\": \"2026-09-01T14:50:34.263Z\", \"assignerShortName\": \"EEF\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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