pupnp up to 1.18.4 atoi signed conversion

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability was found in pupnp up to 1.18.4. It has been rated as critical. Affected is the function atoi. This manipulation causes signed conversion. This vulnerability appears as CVE-2026-41682. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in pupnp up to 1.18.4. It has been declared as critical. Affected by this vulnerability is the function atoi. The manipulation with an unknown input leads to a signed conversion vulnerability. The CWE definition for the vulnerability is CWE-195. The product uses a signed primitive and performs a cast to an unsigned primitive, which can produce an unexpected value if the value of the signed primitive can not be represented using an unsigned primitive. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

pupnp is an SDK for development of UPnP device and control point applications. Prior to version 1.18.5, pupnp is vulnerable to SRRF port confusion due to port truncation via atoi() cast in parse_uri(). This issue has been patched in version 1.18.5.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-41682 since 04/22/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 1.18.5 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch def5f9a2bc42f5b3d713e37c516fbe840ce54b7b is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Signed conversion
CWE: CWE-195 / CWE-194 / CWE-189
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

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: pupnp 1.18.5
Patch: def5f9a2bc42f5b3d713e37c516fbe840ce54b7b

Timelineinfo

04/22/2026 CVE reserved
05/09/2026 +17 days Advisory disclosed
05/09/2026 +0 days VulDB entry created
05/09/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-q522-6w45-4j58
Status: Confirmed

CVE: CVE-2026-41682 (🔒)
GCVE (CVE): GCVE-0-2026-41682
GCVE (VulDB): GCVE-100-362383

Entryinfo

Created: 05/09/2026 06:56
Changes: 05/09/2026 06:56 (69)
Complete: 🔍
Cache ID: 216::103

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