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CVE-2026-119053medium6.9

lwIP 2.0.0 through 2.2.1 SNMP Agent Out-of-Bounds Read via snmp_pbuf_stream_writeto()

Impact

lwIP versions 2.0.0 through 2.2.1 have an out-of-bounds read vulnerability in the SNMP agent. Remote unauthenticated attackers with the read community can send fragmented SNMP requests to receive adjacent memory.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

lwIP · VulnCheck

lwIP

1 range
VulnCheck version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

2.0.0 → through 2.2.1

custom versions

unaffected

unknown

Other versions: unaffected

Original source description

lwIP 2.0.0 through 2.2.1 built with the SNMP agent contains an out-of-bounds read vulnerability in snmp_pbuf_stream_writeto() that bounds copies by pbuf->len instead of remaining bytes. Remote unauthenticated attackers knowing the read community can send fragmented SNMP requests to receive adjacent receive-buffer or pool memory echoed in responses.

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-119053

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-125 ↗

Out-of-bounds Read

VulnCheck

Related →

Environment requirements

These conditions apply together as specified by the publisher. A matching product name alone does not establish exposure.

VulnCheck · platform conditions

Any condition may hold

Vulnerable product

cpe:2.3:a:lwip_project:lwip:*:*:*:*:*:*:*:*

From (inclusive): 2.0.0

Through (inclusive): 2.2.1

Original applicability statements
[
  {
    "nodes": [
      {
        "operator": "OR",
        "negate": false,
        "cpeMatch": [
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:lwip_project:lwip:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "2.0.0",
            "versionEndIncluding": "2.2.1"
          }
        ]
      }
    ]
  }
]
Contributing organizations · 2
VulnCheck

Assigning organization

2026-10-29
CISA-ADP

Additional data publisher

2026-10-29

What changed

Follow changes
No substantive changes have been recorded here yet. History starts when cve.new observes a change after tracking is enabled; earlier edits are not reconstructed.

Large field values are marked as truncated previews. Original source snapshots remain retained.

References

4 sources
github.com/lwip-tcpip/lwip/commit/e98415014aca66ef0daefded8020763b9279a3b2
patchVulnCheck
github.com/lwip-tcpip/lwip
productVulnCheck
github.com/lwip-tcpip/lwip/blob/77dcd25a72509eb83f72b033d219b1d40cd8eb95/src/apps/snmp/snmp_pbuf_stream.c
technical-descriptionVulnCheck
www.vulncheck.com/advisories/lwip-2.0.0-through-2.2.1-snmp-agent-out-of-bounds-read-via-snmp-pbuf-stream-writeto
third-party-advisoryVulnCheck