Buffalo WSR-2533DHPL2/WSR-2533DHP3 path traversal

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.5$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Buffalo WSR-2533DHPL2 and WSR-2533DHP3. The impacted element is an unknown function. The manipulation results in path traversal. This vulnerability was named CVE-2021-20090. The attack may be performed from remote. In addition, an exploit is available.

Detailsinfo

A vulnerability classified as critical has been found in Buffalo WSR-2533DHPL2 and WSR-2533DHP3 (version unknown). Affected is an unknown function. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A path traversal vulnerability in the web interfaces of Buffalo WSR-2533DHPL2 firmware version <= 1.02 and WSR-2533DHP3 firmware version <= 1.24 could allow unauthenticated remote attackers to bypass authentication.

The weakness was presented 04/29/2021 as tra-2021-13. The advisory is available at tenable.com. This vulnerability is traded as CVE-2021-20090. Technical details are unknown but a public exploit is available. This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

The exploit is shared for download at packetstormsecurity.com. It is declared as attacked. This issue was added on 11/03/2021 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 11/17/2021:

Apply updates per vendor instructions.

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.5

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

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Path traversal
CWE: CWE-22
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Attacked
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

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

12/17/2020 🔍
04/29/2021 +132 days 🔍
04/29/2021 +0 days 🔍
11/04/2025 +1650 days 🔍

Sourcesinfo

Advisory: tra-2021-13
Status: Confirmed

CVE: CVE-2021-20090 (🔍)
GCVE (CVE): GCVE-0-2021-20090
GCVE (VulDB): GCVE-100-174258
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/29/2021 20:16
Updated: 11/04/2025 04:09
Changes: 04/29/2021 20:16 (35), 05/03/2021 08:00 (2), 04/21/2024 08:30 (26), 07/25/2024 22:17 (19), 08/26/2024 17:52 (2), 09/11/2024 23:15 (1), 11/04/2025 04:09 (3)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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