CVE-2026-119053
lwIP 2.0.0 through 2.2.1 SNMP Agent Out-of-Bounds Read via snmp_pbuf_stream_writeto()
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
lwIP 2.0.0 through 2.2.1 SNMP Agent Out-of-Bounds Read via snmp_pbuf_stream_writeto()
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.
- Record
CVE-2026-119053- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N - CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-125
- Updated
- 2026-11-02
EUVDEUVD-2026-112819
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.
- Record
EUVD-2026-112819- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-mm46-vrwc-xmpq
lwIP 2.0.0 through 2.2.1 built with the SNMP agent contains an out-of-bounds read vulnerability...
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.
- Record
GHSA-mm46-vrwc-xmpq- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/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 - CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-125
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-119053- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/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 - CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-125
- Updated
- 2026-11-02
OSV
lwIP 2.0.0 through 2.2.1 SNMP Agent Out-of-Bounds Read via snmp_pbuf_stream_writeto()
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.
- Record
CVE-2026-119053- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N - Weakness
- CWE-125
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2026-119053
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.
- Record
DEBIAN-CVE-2026-119053- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-119053
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.
- Record
UBUNTU-CVE-2026-119053- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N - CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-05
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
lwipDebian:12 |
All versions, plus listed versions 2.1.3+dfsg1-22.1.3+dfsg1-32.1.3+dfsg1-42.2.0+dfsg1-12.2.0+dfsg1-2 Show 18 moreShow less2.2.0+dfsg1-32.2.0+dfsg1-42.2.0+dfsg1-52.2.0+dfsg1-62.2.0+dfsg1-6.12.2.0+dfsg1-6.1~exp12.2.0+dfsg1-72.2.0+dfsg1-82.2.0+dfsg1-92.2.1+dfsg1-12.2.1+dfsg1-22.2.1+dfsg1-32.2.1+dfsg1-42.2.1+dfsg1-52.2.1+dfsg1-62.2.1+dfsg1-72.2.1+dfsg1-82.2.1+dfsg1-9 |
None known |
lwipDebian:13 |
All versions, plus listed versions 2.2.1+dfsg1-12.2.1+dfsg1-1+deb13u12.2.1+dfsg1-22.2.1+dfsg1-32.2.1+dfsg1-4 Show 5 moreShow less2.2.1+dfsg1-52.2.1+dfsg1-62.2.1+dfsg1-72.2.1+dfsg1-82.2.1+dfsg1-9 |
None known |
lwipDebian:14 |
All versions, plus listed versions 2.2.1+dfsg1-12.2.1+dfsg1-22.2.1+dfsg1-32.2.1+dfsg1-42.2.1+dfsg1-5 Show 4 moreShow less2.2.1+dfsg1-62.2.1+dfsg1-72.2.1+dfsg1-82.2.1+dfsg1-9 |
None known |
lwipUbuntu:Pro:20.04:LTS |
All versions, plus listed versions 2.1.2-32.1.2-5.12.1.2+dfsg1-12.1.2+dfsg1-42.1.2+dfsg1-4ubuntu0.1~esm1 |
None known |
lwipUbuntu:Pro:22.04:LTS |
All versions, plus listed versions 2.1.2+dfsg1-82.1.2+dfsg1-92.1.3+dfsg1-12.1.3+dfsg1-1ubuntu0.1~esm1 |
None known |
lwipUbuntu:Pro:24.04:LTS |
All versions, plus listed versions 2.1.3+dfsg1-22.1.3+dfsg1-42.2.0+dfsg1-22.2.0+dfsg1-32.2.0+dfsg1-4 Show 6 moreShow less2.2.0+dfsg1-52.2.0+dfsg1-62.2.0+dfsg1-6.12.2.0+dfsg1-6.1build12.2.0+dfsg1-6.1build22.2.0+dfsg1-6.1ubuntu0.1~esm1 |
None known |
lwipUbuntu:26.10 |
All versions, plus listed versions 2.2.1+dfsg1-42.2.1+dfsg1-52.2.1+dfsg1-7 |
None known |
lwipUbuntu:Pro:26.04:LTS |
All versions, plus listed versions 2.2.1+dfsg1-22.2.1+dfsg1-32.2.1+dfsg1-42.2.1+dfsg1-4ubuntu0.1~esm1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | OSV | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-119053 is a medium vulnerability (CVSS 6.9) in Lwip, published October 29, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.48%, the 41st percentile. No source names a fixed version.
References
github.com/lwip-tcpip/lwip/commit/e98415014aca66ef0daefded8020763b9279a3b2
vulncheck.com/advisories/lwip-2.0.0-through-2.2.1-snmp-agent-out-of-bounds-read-via-snmp-pbuf-stream-writeto
nvd.nist.gov/vuln/detail/CVE-2026-119053