Improper Input Validation vulnerability in Apache NimBLE in Mesh Proxy SAR reassembly could result in passing broken data toward application… (CVE-2026-46452)
Source GCVE Database
- Exploitation
Not in CISA KEV, no exploitation reported
- EPSS
- 0.9% chance of exploitation in 30 days – higher than 59% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 1.10.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LWhat to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
GitHub Actionsapache/mynewt-nimblepkg:github/apache/mynewt-nimbleOther threats | Affected
| Fixed in
|
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AI-suggested
Upgrade Apache NimBLE to version 1.10.0 or later, where this vulnerability has been fixed. No other mitigation is indicated.
Description
An improper input validation vulnerability exists in Apache NimBLE through version 1.9.0 in the Mesh Proxy SAR reassembly component. This flaw can cause broken data to be passed to the application, resulting in memory pressure and unstable parsing behavior. The issue is fixed in version 1.10.0.
Impact
The vulnerability can lead to memory pressure and unstable parsing behavior in the affected application, potentially causing denial of service or degraded availability. There is no impact on confidentiality or integrity according to the CVSS vector.
Summary
CVE-2026-46452 is an input validation vulnerability in Apache NimBLE's Mesh Proxy SAR reassembly component affecting versions prior to 1.10.0. Improper validation allows malformed data to be passed to the application layer, potentially causing memory pressure and unstable parsing. This vulnerability does not impact confidentiality or integrity but affects availability due to possible application instability. The vulnerability is classified under CWE-20 (Improper Input Validation).
Weaknesses
References
- nvd.nist.gov/vuln/detail/CVE-2026-46452 (opens in a new tab)
- github.com/apache/mynewt-nimble/commit/593f95227a4073efde840a9bb34614929dfa7ed1 (opens in a new tab)
- lists.apache.org/thread/ym80ogxj3398khvxxogxroz4gvgw3ssg (opens in a new tab)
- openwall.com/lists/oss-security/2026/07/24/16 (opens in a new tab)