CVE-2020-25820 Vulnerability Analysis & Exploit Details

CVE-2020-25820
Vulnerability Scoring

6.5
/10
High Risk

If left unpatched, CVE-2020-25820 could lead to major system disruptions or data loss.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Network
    Vulnerability is exploitable over a network without physical access.
  • Privileges Required: Low
    Some privileges are necessary to exploit the vulnerability.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2020-25820 Details

Status: Analyzed

Last updated: 🕓 29 Oct 2020, 16:22 UTC
Originally published on: 🕐 21 Oct 2020, 13:15 UTC

Time between publication and last update: 8 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

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

CVE-2020-25820 Vulnerability Summary

CVE-2020-25820: BigBlueButton before 2.2.7 allows remote authenticated users to read local files and conduct SSRF attacks via an uploaded Office document that has a crafted URL in an ODF xlink field.

Assessing the Risk of CVE-2020-25820

Access Complexity Graph

The exploitability of CVE-2020-25820 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2020-25820

CVE-2020-25820 presents an accessible attack vector with minimal effort required. Restricting access controls and implementing security updates are critical to reducing exploitation risks.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2020-25820, 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.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2020-25820, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: High
    Exploiting CVE-2020-25820 can result in unauthorized access to sensitive data, severely compromising data privacy.
  • Integrity: None
    CVE-2020-25820 poses no threat to data integrity.
  • Availability: None
    CVE-2020-25820 does not impact system availability.

Exploit Prediction Scoring System (EPSS)

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

EPSS Score: 35.347% (probability of exploit)

EPSS Percentile: 97.25% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 2.75% of others.

CVE-2020-25820 References

External References

CWE Common Weakness Enumeration

CWE-918

CAPEC Common Attack Pattern Enumeration and Classification

  • Server Side Request Forgery CAPEC-664 An adversary exploits improper input validation by submitting maliciously crafted input to a target application running on a server, with the goal of forcing the server to make a request either to itself, to web services running in the server’s internal network, or to external third parties. If successful, the adversary’s request will be made with the server’s privilege level, bypassing its authentication controls. This ultimately allows the adversary to access sensitive data, execute commands on the server’s network, and make external requests with the stolen identity of the server. Server Side Request Forgery attacks differ from Cross Site Request Forgery attacks in that they target the server itself, whereas CSRF attacks exploit an insecure user authentication mechanism to perform unauthorized actions on the user's behalf.

Vulnerable Configurations

  • cpe:2.3:a:bigbluebutton:bigbluebutton:-:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:-:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:0.7:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:0.7:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:0.8:-:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:0.8:-:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:0.8:rc2:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:0.8:rc2:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:0.9.0:beta:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:0.9.0:beta:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:0.9.1:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:0.9.1:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:0.9.2:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:0.9.2:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:0.71:-:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:0.71:-:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:0.71:a:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:0.71:a:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:0.81:-:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:0.81:-:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:0.81:b:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:0.81:b:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:0.81:rc:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:0.81:rc:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:0.81:rc2:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:0.81:rc2:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:0.81:rc3:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:0.81:rc3:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:0.81:rc4:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:0.81:rc4:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:0.81:rc5:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:0.81:rc5:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:1.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:1.0.0:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:1.1.0:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:1.1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.0:-:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.0:-:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.0:rc10:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.0:rc10:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.0:rc11:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.0:rc11:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.0:rc2:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.0:rc2:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.0:rc3:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.0:rc3:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.0:rc4:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.0:rc4:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.0:rc5:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.0:rc5:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.0:rc6:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.0:rc6:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.0:rc7:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.0:rc7:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.0:rc8:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.0:rc8:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.0:rc9:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.0:rc9:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:-:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:-:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:rc1:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:rc2:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:rc2:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:rc3:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:rc3:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:rc4:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:rc4:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:rc5:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:rc5:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:rc6:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:rc6:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta2:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta2:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta3:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta3:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta4:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta4:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta5:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta5:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta6:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta6:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta7:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta7:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta8:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta8:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta9:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta9:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta10:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta10:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta11:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta11:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta12:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta12:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta14:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta14:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta15:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta15:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta16:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta16:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta17:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta17:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta18:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta18:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta19:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta19:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta20:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta20:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta21:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta21:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta22:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta22:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta23:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0:beta23:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.1:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.1:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.2:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.2:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.3:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.3:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.4:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.4:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.5:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.5:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.6:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.6:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.7:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.7:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.8:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.8:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.9:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.9:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.10:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.10:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.11:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.11:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.12:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.12:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.14:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.14:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.15:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.15:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.16:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.16:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.17:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.17:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.18:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.18:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.19:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.19:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.20:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.20:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.21:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.21:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.22:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.22:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.23:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.23:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.24:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.24:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.25:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.25:*:*:*:*:*:*:*
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.26:*:*:*:*:*:*:*
    cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.26:*:*:*:*:*:*:*

Protect Your Infrastructure against CVE-2020-25820: 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 5 Recently Published CVEs Vulnerabilities

  • CVE-2025-2129 – A vulnerability was found in Mage AI 0.9.75. It has been classified as problematic. This affects an unknown part. The manipulation leads to insecur...
  • CVE-2025-2127 – A vulnerability was found in JoomlaUX JUX Real Estate 3.4.0 on Joomla. It has been classified as problematic. Affected is an unknown function of th...
  • CVE-2025-2126 – A vulnerability was found in JoomlaUX JUX Real Estate 3.4.0 on Joomla and classified as critical. This issue affects some unknown processing of the...
  • CVE-2025-2125 – A vulnerability has been found in Control iD RH iD 25.2.25.0 and classified as problematic. This vulnerability affects unknown code of the file /v2...
  • CVE-2025-2124 – A vulnerability, which was classified as problematic, was found in Control iD RH iD 25.2.25.0. This affects an unknown part of the file /v2/custome...