CVE-2026-8836

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Source
https://cve.org/CVERecord?id=CVE-2026-8836
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-8836.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-8836
Downstream
Published
2026-05-18T18:45:12.791Z
Modified
2026-06-18T04:13:45.987214255Z
Severity
  • 9.3 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X CVSS Calculator
Summary
lwIP snmpv3 USM snmp_msg.c snmp_parse_inbound_frame stack-based overflow
Details

A vulnerability was found in lwIP up to 2.2.1. Affected is the function snmpparseinboundframe of the file src/apps/snmp/snmpmsg.c of the component snmpv3 USM Handler. Performing a manipulation of the argument msgAuthenticationParameters results in stack-based buffer overflow. The attack may be initiated remotely. The patch is named 0c957ec03054eb6c8205e9c9d1d05d90ada3898c. It is suggested to install a patch to address this issue.

Database specific 
{
    "cna_assigner": "VulDB",
    "cwe_ids": [
        "CWE-119",
        "CWE-121"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8836.json"
}
References

Affected packages

Git / cgit.git.savannah.gnu.org/cgit/lwip.git

Affected ranges

Type
GIT
Repo
https://cgit.git.savannah.gnu.org/cgit/lwip.git
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
0c957ec03054eb6c8205e9c9d1d05d90ada3898c
Database specific 
{
    "source": "REFERENCES"
}
Type
GIT
Repo
https://github.com/lwip-tcpip/lwip
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
0c957ec03054eb6c8205e9c9d1d05d90ada3898c
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "2.1.0"
        },
        {
            "last_affected": "2.1.1"
        },
        {
            "last_affected": "2.1.2"
        },
        {
            "last_affected": "2.1.3"
        },
        {
            "last_affected": "2.2.0"
        },
        {
            "last_affected": "2.2.1"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

Other
POST_PACK_REMOVE
POST_REMOVE_ARCH
PRE_ARCH_MOVE
PRE_PACK_REMOVE
PRE_leon-dhcp
STABLE-0_6_4
STABLE-0_6_5
STABLE-0_7_0
STABLE-1_0_0
STABLE-1_1_0
STABLE-1_1_0-RC1
STABLE-1_1_1
STABLE-1_3_0
STABLE-1_3_0-RC1
STABLE-1_3_1
STABLE-1_3_1-RC1
STABLE-1_3_1-RC2
STABLE-1_3_1-RC3
STABLE-1_3_2
STABLE-1_3_2-RC1
STABLE-1_4_0
STABLE-1_4_0-RC1
STABLE-1_4_0-RC2
STABLE-2_1_0_RC1
STABLE-2_1_0_RELEASE
STABLE-2_2_0_RC1
STABLE-2_2_0_RELEASE
STABLE-2_2_1_RELEASE
cvs-repository-moved-to-git
master_at_STABLE-2_0_0
merged_from_main_to_DEVEL
merged_from_main_to_STABLE
merged_from_main_to_STABLE-0_7

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-8836.json"