CVE-2020-35836 Vulnerability Analysis & Exploit Details

Status: Analyzed - Last modified: 04 Jan 2021, 18:54 UTC Published: 30 Dec 2020, 00:15 UTC

CVE-2020-35836
Vulnerability Scoring

4.8
/10

Attack Complexity Details

  • Attack Complexity: Low Impact
  • Attack Vector: NETWORK
  • Privileges Required: HIGH IMPACT
  • Scope: CHANGED
  • User Interaction: REQUIRED

CIA Impact Definition

  • Confidentiality: Low Impact
  • Integrity: Low Impact
  • Availability:

CVE-2020-35836 Vulnerability Summary

Certain NETGEAR devices are affected by stored XSS. This affects D7800 before 1.0.1.56, R7500v2 before 1.0.3.46, R7800 before 1.0.2.74, R8900 before 1.0.4.28, R9000 before 1.0.4.28, XR500 before 2.3.2.56, XR700 before 1.0.1.10, and RAX120 before 1.0.0.78.

Access Complexity Graph

Above is the Access Complexity Graph for CVE-2020-35836. It helps visualize the difficulty level and privilege requirements needed to exploit this vulnerability, providing a quick assessment of its exploitation feasibility.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2020-35836, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

Impact Analysis

Below is the Impact Analysis for CVE-2020-35836, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

Exploit Prediction Scoring System (EPSS)

The EPSS score estimates the probability that this vulnerability will be exploited in the near future.

EPSS Score: 0.054% (probability of exploit)

EPSS Percentile: 25.89% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 74.11% of others.

CVE-2020-35836 Detailed Information and External References

References

CWE

CWE-79

CAPEC

  • XSS Using MIME Type Mismatch CAPEC-209 An adversary creates a file with scripting content but where the specified MIME type of the file is such that scripting is not expected. The adversary tricks the victim into accessing a URL that responds with the script file. Some browsers will detect that the specified MIME type of the file does not match the actual type of its content and will automatically switch to using an interpreter for the real content type. If the browser does not invoke script filters before doing this, the adversary's script may run on the target unsanitized, possibly revealing the victim's cookies or executing arbitrary script in their browser.
  • DOM-Based XSS CAPEC-588 This type of attack is a form of Cross-Site Scripting (XSS) where a malicious script is inserted into the client-side HTML being parsed by a web browser. Content served by a vulnerable web application includes script code used to manipulate the Document Object Model (DOM). This script code either does not properly validate input, or does not perform proper output encoding, thus creating an opportunity for an adversary to inject a malicious script launch a XSS attack. A key distinction between other XSS attacks and DOM-based attacks is that in other XSS attacks, the malicious script runs when the vulnerable web page is initially loaded, while a DOM-based attack executes sometime after the page loads. Another distinction of DOM-based attacks is that in some cases, the malicious script is never sent to the vulnerable web server at all. An attack like this is guaranteed to bypass any server-side filtering attempts to protect users.
  • Reflected XSS CAPEC-591 This type of attack is a form of Cross-Site Scripting (XSS) where a malicious script is "reflected" off a vulnerable web application and then executed by a victim's browser. The process starts with an adversary delivering a malicious script to a victim and convincing the victim to send the script to the vulnerable web application.
  • Stored XSS CAPEC-592 An adversary utilizes a form of Cross-site Scripting (XSS) where a malicious script is persistently "stored" within the data storage of a vulnerable web application as valid input.
  • Cross-Site Scripting (XSS) CAPEC-63 An adversary embeds malicious scripts in content that will be served to web browsers. The goal of the attack is for the target software, the client-side browser, to execute the script with the users' privilege level. An attack of this type exploits a programs' vulnerabilities that are brought on by allowing remote hosts to execute code and scripts. Web browsers, for example, have some simple security controls in place, but if a remote attacker is allowed to execute scripts (through injecting them in to user-generated content like bulletin boards) then these controls may be bypassed. Further, these attacks are very difficult for an end user to detect.
  • AJAX Footprinting CAPEC-85 This attack utilizes the frequent client-server roundtrips in Ajax conversation to scan a system. While Ajax does not open up new vulnerabilities per se, it does optimize them from an attacker point of view. A common first step for an attacker is to footprint the target environment to understand what attacks will work. Since footprinting relies on enumeration, the conversational pattern of rapid, multiple requests and responses that are typical in Ajax applications enable an attacker to look for many vulnerabilities, well-known ports, network locations and so on. The knowledge gained through Ajax fingerprinting can be used to support other attacks, such as XSS.

Vulnerable Configurations

  • cpe:2.3:o:netgear:d7800_firmware:1.0.1.22:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:d7800_firmware:1.0.1.22:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:d7800_firmware:1.0.1.24:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:d7800_firmware:1.0.1.24:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:d7800_firmware:1.0.1.28:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:d7800_firmware:1.0.1.28:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:d7800_firmware:1.0.1.30:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:d7800_firmware:1.0.1.30:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:d7800_firmware:1.0.1.31:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:d7800_firmware:1.0.1.31:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:d7800_firmware:1.0.1.34:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:d7800_firmware:1.0.1.34:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:d7800_firmware:1.0.1.40:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:d7800_firmware:1.0.1.40:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:d7800_firmware:1.0.1.42:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:d7800_firmware:1.0.1.42:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:d7800_firmware:1.0.1.44:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:d7800_firmware:1.0.1.44:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:d7800_firmware:1.0.1.47:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:d7800_firmware:1.0.1.47:*:*:*:*:*:*:*
  • cpe:2.3:h:netgear:d7800:-:*:*:*:*:*:*:*
    cpe:2.3:h:netgear:d7800:-:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r7500v2_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r7500v2_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r7500v2_firmware:1.0.3.40:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r7500v2_firmware:1.0.3.40:*:*:*:*:*:*:*
  • cpe:2.3:h:netgear:r7500v2:-:*:*:*:*:*:*:*
    cpe:2.3:h:netgear:r7500v2:-:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r7800_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r7800_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r7800_firmware:1.0.1.30:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r7800_firmware:1.0.1.30:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r7800_firmware:1.0.2.16:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r7800_firmware:1.0.2.16:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r7800_firmware:1.0.2.28:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r7800_firmware:1.0.2.28:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r7800_firmware:1.0.2.30:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r7800_firmware:1.0.2.30:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r7800_firmware:1.0.2.32:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r7800_firmware:1.0.2.32:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r7800_firmware:1.0.2.36:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r7800_firmware:1.0.2.36:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r7800_firmware:1.0.2.38:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r7800_firmware:1.0.2.38:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r7800_firmware:1.0.2.40:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r7800_firmware:1.0.2.40:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r7800_firmware:1.0.2.42:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r7800_firmware:1.0.2.42:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r7800_firmware:1.0.2.44:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r7800_firmware:1.0.2.44:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r7800_firmware:1.0.2.46:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r7800_firmware:1.0.2.46:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r7800_firmware:1.0.2.52:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r7800_firmware:1.0.2.52:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r7800_firmware:1.0.2.58:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r7800_firmware:1.0.2.58:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r7800_firmware:1.0.2.60:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r7800_firmware:1.0.2.60:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r7800_firmware:1.0.2.62:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r7800_firmware:1.0.2.62:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r7800_firmware:1.0.2.68:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r7800_firmware:1.0.2.68:*:*:*:*:*:*:*
  • cpe:2.3:h:netgear:r7800:-:*:*:*:*:*:*:*
    cpe:2.3:h:netgear:r7800:-:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r8900_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r8900_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r8900_firmware:1.0.2.60:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r8900_firmware:1.0.2.60:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r8900_firmware:1.0.3.6:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r8900_firmware:1.0.3.6:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r8900_firmware:1.0.3.10:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r8900_firmware:1.0.3.10:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r8900_firmware:1.0.4.2:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r8900_firmware:1.0.4.2:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r8900_firmware:1.0.4.12:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r8900_firmware:1.0.4.12:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r8900_firmware:1.0.4.26:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r8900_firmware:1.0.4.26:*:*:*:*:*:*:*
  • cpe:2.3:h:netgear:r8900:-:*:*:*:*:*:*:*
    cpe:2.3:h:netgear:r8900:-:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r9000_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r9000_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r9000_firmware:1.0.2.4:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r9000_firmware:1.0.2.4:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r9000_firmware:1.0.2.30:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r9000_firmware:1.0.2.30:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r9000_firmware:1.0.2.40:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r9000_firmware:1.0.2.40:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r9000_firmware:1.0.2.52:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r9000_firmware:1.0.2.52:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r9000_firmware:1.0.3.6:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r9000_firmware:1.0.3.6:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r9000_firmware:1.0.3.10:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r9000_firmware:1.0.3.10:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r9000_firmware:1.0.3.16:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r9000_firmware:1.0.3.16:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r9000_firmware:1.0.4.2:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r9000_firmware:1.0.4.2:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r9000_firmware:1.0.4.8:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r9000_firmware:1.0.4.8:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r9000_firmware:1.0.4.12:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r9000_firmware:1.0.4.12:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:r9000_firmware:1.0.4.26:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:r9000_firmware:1.0.4.26:*:*:*:*:*:*:*
  • cpe:2.3:h:netgear:r9000:-:*:*:*:*:*:*:*
    cpe:2.3:h:netgear:r9000:-:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:xr500_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:xr500_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:xr500_firmware:2.3.2.22:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:xr500_firmware:2.3.2.22:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:xr500_firmware:2.3.2.32:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:xr500_firmware:2.3.2.32:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:xr500_firmware:2.3.2.40:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:xr500_firmware:2.3.2.40:*:*:*:*:*:*:*
  • cpe:2.3:h:netgear:xr500:-:*:*:*:*:*:*:*
    cpe:2.3:h:netgear:xr500:-:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:xr700_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:xr700_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:netgear:xr700:-:*:*:*:*:*:*:*
    cpe:2.3:h:netgear:xr700:-:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:rax120_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:rax120_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:o:netgear:rax120_firmware:1.0.0.74:*:*:*:*:*:*:*
    cpe:2.3:o:netgear:rax120_firmware:1.0.0.74:*:*:*:*:*:*:*
  • cpe:2.3:h:netgear:rax120:-:*:*:*:*:*:*:*
    cpe:2.3:h:netgear:rax120:-:*:*:*:*:*:*:*

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Protect Your Infrastructure: Combat Critical CVE Threats

Stay updated with real-time CVE vulnerabilities and take action to secure your systems. Enhance your cybersecurity posture with the latest threat intelligence and mitigation techniques. Develop the skills necessary to defend against CVEs and secure critical infrastructures. Join the top cybersecurity professionals safeguarding today's infrastructures.

Other Recently Published CVEs

  • CVE-2024-13718 – The Flexible Wishlist for WooCommerce – Ecommerce Wishlist & Save for later plugin for WordPress is vulnerable to Cross-Site Request Forgery in all...
  • CVE-2024-13395 – The Threepress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'threepress' shortcode in all versions up to, and...
  • CVE-2024-13316 – The Scratch & Win – Giveaways and Contests. Boost subscribers, traffic, repeat visits, referrals, sales and more plugin for WordPress is vulnerabl...
  • CVE-2024-12860 – The CarSpot – Dealership Wordpress Classified Theme theme for WordPress is vulnerable to privilege escalation via account takeover in all versions ...
  • CVE-2025-0864 – The Active Products Tables for WooCommerce. Use constructor to create tables plugin for WordPress is vulnerable to Reflected Cross-Site Scripting v...
  • CVE-2025-0425 – Via the GUI of the "bestinformed Infoclient", a low-privileged user is by default able to change the server address of the "bestinformed Server" to...
  • CVE-2025-0424 – In the "bestinformed Web" application, some user input was not properly sanitized. This leads to multiple authenticated stored cross-site scripting...
  • CVE-2025-0423 – In the "bestinformed Web" application, some user input was not properly sanitized. This leads to multiple unauthenticated stored cross-site scripti...
  • CVE-2025-0422 – An authenticated user in the "bestinformed Web" application can execute commands on the underlying server running the application. (Remote Code Exe...
  • CVE-2024-13795 – The Ecwid by Lightspeed Ecommerce Shopping Cart plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and includi...