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CVE-2026-112062

lwIP through 2.2.1 Stack Out-of-Bounds Write via mDNS Search Response Handler

CVSS score

6.0

EPSS probability

—

Risk score

0.6

Published

9 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Official patch verified

Etkilenen ürün ve sürüm için yayımlanan güvenlik güncellemesini uygulayın.

Impact on My Inventory

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Vulnerability description

CVE AI research

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DayBreach AI Explanation

Verified against sources

CVE-2026-112062: lwIP Stack Out-of-Bounds Write Vulnerability

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

lwIP through 2.2.1 contains a stack out-of-bounds write vulnerability in mdns_handle_response. Adjacent attackers can corrupt stack memory and crash the device by sending mDNS responses with invalid domain names.

Why does it matter?

Attackers on the local link can compromise memory integrity and cause service disruptions by sending manipulated mDNS responses during service searches.

What should be done?

  • Follow official vendor advisories
  • Apply vendor updates as patch status remains unverified in current sources
  • Monitor local network security and mDNS traffic
Chain of evidence and sources3 verified claims

lwIP 2.2.1 ve önceki sürümleri mdns_handle_response içinde yığın sınır dışı yazma zafiyeti barındırmaktadır.

S0 · daybreach-canonicalS1 · nvd

Yerel ağdaki saldırganlar, geçersiz mDNS yanıtlarıyla 256 baytlık yığın arabelleğini taşırarak cihazı çökletebilir.

S0 · daybreach-canonicalS1 · nvd

İncelenen resmî kaynaklarda yama durumu doğrulanamamıştır.

S0 · daybreach-canonical
Show the technical text from the sources

lwIP through 2.2.1 contains a stack out-of-bounds write vulnerability in mdns_handle_response that allows adjacent attackers to corrupt stack memory by sending mDNS responses with invalid domain names. Attackers on the local link can send multicast PTR answers with oversized RDLENGTH or SRV answers with RDLENGTH below 6 during a service search, overflowing a 256-byte stack buffer and crashing the device.

CVSS vector: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N

CWE: CWE-121

Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-112062 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1lwIPlwIP View
Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
6.0CVSS V4_0MEDIUMCVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:NCVE CNA
6.0CVSS V40MEDIUMCVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/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:XNVD
5.9CVSS V3_1MEDIUMCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:HCVE CNA
5.9CVSS V31MEDIUMCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:HNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch verified

2 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

cvelist

CNA çözüm referansı

Open source
reference

Yama veya çözüm referansı

Open source
Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Apply the official update named in the evidence only to the matching product and version.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-112062 is associated with the following CWEs:

CWE-121: Common Weakness Enumeration Entry CWE-121

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-112062 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureBitişik ağ
PermissionsGerekmiyor
UserGerekmiyor

Official Sources and Advisories

https://hackmd.io/@haindpwn/lwip-mdns-search-result-domain-oob-writevendor-advisoryhttps://github.com/lwip-tcpip/lwip/commit/ab2f69c7d8980c01cdd67ed4b23ac61118ed0205patchhttps://github.com/lwip-tcpip/lwip/blob/STABLE-2_2_1_RELEASE/src/apps/mdns/mdns.cvendor-advisoryVulnCheck Advisory: lwIP through 2.2.1 Stack Out-of-Bounds Write via mDNS Search Response Handlervendor-advisory

CVSS Vector Radar Chart

6.0 / 10
Attack VectorAdjacentComplexityLowPrivilegesNoneUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityHigh

Vulnerability Scoring Details

CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
Attack VectorAdjacent network
Attack ComplexityLow
Privileges RequiredNone required
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)High

Yama doğrulandı

2 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

Follow the vendor

L
lwIP logo
lwIP

Weakness Type (CWE & CAPEC)

CWE-121

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CVE-2026-112062 · lwIP through 2.2.1 Stack Out-of-Bounds…