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CVE-2025-61601

25
FAUCET Score

CVE-2025-61601 is a Denial of Service (DoS) vulnerability affecting BigBlueButton versions prior to 3.0.13, an open-source virtual classroom platform. An authenticated user can crash or freeze the server by exploiting the polling feature with a malicious payload containing a massive array in the answerIds field, impacting current and potentially all meetings. This vulnerability has a CVSS score of 7.5 (HIGH) due to its network attack vector, low attack complexity, and high availability impact, with no confidentiality or integrity impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.0.13CPE matchmatch criteria
cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.44%
Probability of exploitation in next 30 days
EPSS Percentile
36.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0044 is in the 15th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / bigbluebutton/bigbluebutton/pull/23662
Issue TrackingPatch
github.com / bigbluebutton/bigbluebutton/security/advisories/GHSA-73j3-v3fq-fqx5
ExploitVendor Advisory
youtube.com / watch
Exploit