openNDS up to 10.x memory leak

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.96+

Summaryinfo

A vulnerability was found in openNDS up to 10.x. It has been declared as critical. Affected is an unknown function. Executing a manipulation can lead to memory leak. This vulnerability is tracked as CVE-2026-38819. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability has been found in openNDS up to 10.x and classified as critical. This vulnerability affects some unknown processing. The manipulation with an unknown input leads to a memory leak vulnerability. The CWE definition for the vulnerability is CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. As an impact it is known to affect availability. CVE summarizes:

Multiple memory leaks in openNDS before 11.0.0 allow an unauthenticated attacker on the captive portal network to exhaust all available memory on the device within minutes.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-38819 since 04/06/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 11.0.0 eliminates this vulnerability.

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Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.3
CNA Vector (MITRE): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory leak
CWE: CWE-401 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: openNDS 11.0.0

Timelineinfo

04/06/2026 CVE reserved
08/28/2026 +144 days Advisory disclosed
08/28/2026 +0 days VulDB entry created
08/28/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-38819 (🔒)
GCVE (CVE): GCVE-0-2026-38819
GCVE (VulDB): GCVE-100-396472

Entryinfo

Created: 08/28/2026 04:31
Changes: 08/28/2026 04:31 (62)
Complete: 🔍
Cache ID: 216::103

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