Netgear WPN824EXT 1.1.1_1.1.9 Firmware Image cryptographic issue

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.8$5k-$25k0.00

Summaryinfo

A vulnerability was found in Netgear WPN824EXT 1.1.1_1.1.9. It has been declared as problematic. Affected by this issue is some unknown functionality of the component Firmware Image Handler. The manipulation results in cryptographic issue. This vulnerability is identified as CVE-2022-38955. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Netgear WPN824EXT 1.1.1_1.1.9 (Wireless LAN Software). It has been classified as critical. Affected is some unknown processing of the component Firmware Image Handler. The manipulation with an unknown input leads to a cryptographic issue vulnerability. CWE is classifying the issue as CWE-310. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An exploitable firmware modification vulnerability was discovered on the Netgear WPN824EXT WiFi Range Extender. An attacker can conduct a MITM attack to modify the user-uploaded firmware image and bypass the CRC check. A successful attack can either introduce a backdoor to the device or make the device DoS. This affects Firmware Version: 1.1.1_1.1.9.

The weakness was released 09/21/2022. The advisory is available at hackmd.io. This vulnerability is traded as CVE-2022-38955 since 08/29/2022. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 05/28/2025). This vulnerability is assigned to T1600 by the MITRE ATT&CK project.

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

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Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.8

VulDB Base Score: 8.1
VulDB Temp Score: 8.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Cryptographic issue
CWE: CWE-310
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

08/29/2022 🔍
09/21/2022 +23 days 🔍
09/21/2022 +0 days 🔍
05/28/2025 +980 days 🔍

Sourcesinfo

Vendor: netgear.com

Advisory: hackmd.io
Status: Not defined

CVE: CVE-2022-38955 (🔍)
GCVE (CVE): GCVE-0-2022-38955
GCVE (VulDB): GCVE-100-209166

Entryinfo

Created: 09/21/2022 07:56
Updated: 05/28/2025 18:52
Changes: 09/21/2022 07:56 (39), 10/21/2022 13:09 (11), 05/28/2025 18:52 (15)
Complete: 🔍
Cache ID: 216::103

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