TP-LINK TL-WR940N/TL-WR841N/TL-WR740N /userRpm/FixMapCfgRpm buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in TP-LINK TL-WR940N, TL-WR841N and TL-WR740N. The affected element is an unknown function of the file /userRpm/FixMapCfgRpm. This manipulation causes buffer overflow. This vulnerability is registered as CVE-2023-33537. No exploit is available.

Detailsinfo

A vulnerability classified as critical was found in TP-LINK TL-WR940N, TL-WR841N and TL-WR740N (Router Operating System) (affected version not known). Affected by this vulnerability is some unknown functionality of the file /userRpm/FixMapCfgRpm. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

TP-Link TL-WR940N V2/V4, TL-WR841N V8/V10, and TL-WR740N V1/V2 was discovered to contain a buffer overflow via the component /userRpm/FixMapCfgRpm.

The weakness was published 06/07/2023. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2023-33537 since 05/22/2023. Technical details of the vulnerability are known, but there is no available exploit.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-37696). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 7.2

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

CNA Base Score: 8.1
CNA Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/22/2023 🔍
06/07/2023 +16 days 🔍
06/07/2023 +0 days 🔍
01/04/2026 +942 days 🔍

Sourcesinfo

Vendor: tp-link.com

Advisory: github.com
Status: Not defined

CVE: CVE-2023-33537 (🔍)
GCVE (CVE): GCVE-0-2023-33537
GCVE (VulDB): GCVE-100-230995
EUVD: 🔍

Entryinfo

Created: 06/07/2023 08:26
Updated: 01/04/2026 23:15
Changes: 06/07/2023 08:26 (38), 07/05/2023 16:36 (11), 01/07/2025 19:42 (26), 01/04/2026 23:15 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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