CVE-2010-0217: Zeacom Chat Server before 5.1 uses too short a random string for the JSESSIONID value, which makes it easier f

Q: How do I fix CVE-2010-0217?

chat server: upgrade to newer than 5.0. Exact commands for each OS are on this page.

Q: Is CVE-2010-0217 being exploited?

CVE-2010-0217 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-2010-0217 affect?

CVE-2010-0217 affects chat server. Severity is medium (CVSS 5.8). Zeacom Chat Server before 5.1 uses too short a random string for the JSESSIONID value, which makes it easier for remote attackers to hijack sessions or cause a denial of service (Chat Server crash or Tomcat daemon crash) via a brute-force a

Q: How urgent is CVE-2010-0217?

Priority 43/100. Public exploit reference

This month

MEDIUM 5.8UPGRADE

CVE-2010-0217 is a medium-severity flaw (CVSS 5.8) affecting chat server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Zeacom Chat Server before 5.1 uses too short a random string for the JSESSIONID value, which makes it easier for remote attackers to hijack sessions or cause a denial of service (Chat Server crash or Tomcat daemon crash) via a brute-force attack.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.8 (Medium)
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-310
Published	2011-05-20
Last modified	2026-06-16

Publisher (CNA): CERT/CC · Vendor: zeacom

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2011-05-20 22:55 UTCPublished CVE record published
2026-06-16 23:15 UTCUpdated Record last modified

zeacom chat server UPGRADE

Affected: <= 5.0

Fixed in: newer than 5.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy chat-server || rpm -q chat-server || chat-server --version

2. UPGRADE to newer than 5.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade chat-server

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade chat-server

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-2010-0217?

chat server: upgrade to newer than 5.0. Exact commands for each OS are on this page.

Is CVE-2010-0217 being exploited?

CVE-2010-0217 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-2010-0217 affect?

CVE-2010-0217 affects chat server. Severity is medium (CVSS 5.8). Zeacom Chat Server before 5.1 uses too short a random string for the JSESSIONID value, which makes it easier for remote attackers to hijack sessions or cause a denial of service (Chat Server crash or Tomcat daemon crash) via a brute-force a

How urgent is CVE-2010-0217?

Priority 43/100. Public exploit reference

Software pages

Apache Tomcat vulnerabilities

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References

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