CVE-2015-2804: The management web interface in Alcatel-Lucent OmniSwitch 6450, 6250, 6850E, 9000E, 6400, and 6855 with firmwa

Q: How do I fix CVE-2015-2804?

omniswitch firmware: upgrade to newer than 6.6.5.r02. Exact commands for each OS are on this page.

Q: Is CVE-2015-2804 being exploited?

CVE-2015-2804 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-2015-2804 affect?

CVE-2015-2804 affects omniswitch firmware. Severity is medium (CVSS 4.3). The management web interface in Alcatel-Lucent OmniSwitch 6450, 6250, 6850E, 9000E, 6400, and 6855 with firmware before 6.6.4.309.R01 and 6.6.5.x before 6.6.5.80.R02 generates weak session identifiers, which allows remote attackers to hijac

Q: How urgent is CVE-2015-2804?

Priority 40/100. Public exploit reference

This month

MEDIUM 4.3UPGRADE

CVE-2015-2804 is a medium-severity flaw (CVSS 4.3) affecting omniswitch firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The management web interface in Alcatel-Lucent OmniSwitch 6450, 6250, 6850E, 9000E, 6400, and 6855 with firmware before 6.6.4.309.R01 and 6.6.5.x before 6.6.5.80.R02 generates weak session identifiers, which allows remote attackers to hijack arbitrary sessions via a brute force attack.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	2.0% (top 19%)
CISA exploited list	No
Weakness	CWE-200
Published	2015-06-16
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: alcatel-lucent

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2015-06-16 16:59 UTCPublished CVE record published
2026-06-17 00:24 UTCUpdated Record last modified

alcatel-lucent omniswitch firmware UPGRADE

Affected: <= 6.4.5.r02 · <= 6.4.6.r01 · <= 6.6.4.r01 · <= 6.6.5.r02

Fixed in: newer than 6.6.5.r02

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2015-2804?

omniswitch firmware: upgrade to newer than 6.6.5.r02. Exact commands for each OS are on this page.

Is CVE-2015-2804 being exploited?

CVE-2015-2804 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-2015-2804 affect?

CVE-2015-2804 affects omniswitch firmware. Severity is medium (CVSS 4.3). The management web interface in Alcatel-Lucent OmniSwitch 6450, 6250, 6850E, 9000E, 6400, and 6855 with firmware before 6.6.4.309.R01 and 6.6.5.x before 6.6.5.80.R02 generates weak session identifiers, which allows remote attackers to hijac

How urgent is CVE-2015-2804?

Priority 40/100. Public exploit reference

Related CVEs

CVE-2015-2805 MEDIUM 6.8 UPGRADE Cross-site request forgery (CSRF) vulnerability in sec/content/sec_asa_users_local_db_add.html in the manageme

References

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