CVE-2025-62781: PILOS (Platform for Interactive Live-Online Seminars) is a frontend for BigBlueButton

Q: How do I fix CVE-2025-62781?

pilos: upgrade to 4.8.0. Exact commands for each OS are on this page.

Q: Is CVE-2025-62781 being exploited?

CVE-2025-62781 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-62781 affect?

CVE-2025-62781 affects pilos. Severity is medium (CVSS 5.0). PILOS (Platform for Interactive Live-Online Seminars) is a frontend for BigBlueButton. Prior to 4.8.0, users with a local account can change their password while logged in. When doing so, all other active sessions are terminated, except for

Q: How urgent is CVE-2025-62781?

Priority 19/100. No elevated risk signals yet.

Routine

MEDIUM 5.0UPGRADE

CVE-2025-62781 is a medium-severity flaw (CVSS 5.0) affecting pilos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PILOS (Platform for Interactive Live-Online Seminars) is a frontend for BigBlueButton. Prior to 4.8.0, users with a local account can change their password while logged in. When doing so, all other active sessions are terminated, except for the currently active one. However, the current session’s token remains valid and is not refreshed. If an attacker has previously obtained this session token through another vulnerability, changing the password

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.0 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 93%)
CISA exploited list	No
Weakness	CWE-613
Published	2025-10-27
Last modified	2026-10-08

Publisher (CNA): GitHub, Inc. · Vendor: thm

Last updated 2026-10-08 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-10-27 22:15 UTCPublished CVE record published
2026-10-08 11:10 UTCUpdated Record last modified

thm pilos UPGRADE

Affected: < 4.8.0

Fixed in: 4.8.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy pilos || rpm -q pilos || pilos --version

2. UPGRADE to 4.8.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade pilos

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pilos

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-62781?

pilos: upgrade to 4.8.0. Exact commands for each OS are on this page.

Is CVE-2025-62781 being exploited?

CVE-2025-62781 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-62781 affect?

CVE-2025-62781 affects pilos. Severity is medium (CVSS 5.0). PILOS (Platform for Interactive Live-Online Seminars) is a frontend for BigBlueButton. Prior to 4.8.0, users with a local account can change their password while logged in. When doing so, all other active sessions are terminated, except for

How urgent is CVE-2025-62781?

Priority 19/100. No elevated risk signals yet.

Related CVEs

CVE-2025-62524 MEDIUM 5.3 UPGRADE PILOS (Platform for Interactive Live-Online Seminars) is a frontend for BigBlueButton
CVE-2025-62523 MEDIUM 6.3 UPGRADE PILOS (Platform for Interactive Live-Online Seminars) is a frontend for BigBlueButton
CVE-2026-22800 LOW 2.4 UPGRADE PILOS (Platform for Interactive Live-Online Seminars) is a frontend for BigBlueButton

References

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