CVE-2005-3397: Cross-site scripting (XSS) vulnerability in Comersus BackOffice allows remote attackers to inject arbitrary we

Routine

MEDIUM 4.3DOWNGRADEDOWNGRADE

CVE-2005-3397 is a medium-severity flaw (CVSS 4.3) affecting comersus backoffice lite, comersus backoffice plus. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in Comersus BackOffice allows remote attackers to inject arbitrary web script or HTML via the error parameter to comersus_backoffice_supportError.asp. NOTE: the comersus_backoffice_message.asp/message vector is already covered by CVE-2005-2191 item 2.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Published	2005-11-01
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: comersus open technologies

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

Am I affected?

Timeline

2005-11-01 12:47 UTCPublished CVE record published
2026-06-16 22:16 UTCUpdated Record last modified

comersus open technologies comersus backoffice lite DOWNGRADE

Affected: all versions · 4.2 · 4.5 · 4.10 · 4.11 · 4.30 · 4.32 · 5.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.2

1. Check installed version

apt-cache policy comersus-backoffice-lite || rpm -q comersus-backoffice-lite || comersus-backoffice-lite --version

2. No fixed release: DOWNGRADE to a release before 4.2 (Debian / Ubuntu)

apt-cache madison comersus-backoffice-lite sudo apt install comersus-backoffice-lite=<VERSION_BEFORE_4.2> sudo apt-mark hold comersus-backoffice-lite

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list comersus-backoffice-lite sudo dnf downgrade comersus-backoffice-lite-<VERSION_BEFORE_4.2> sudo dnf versionlock add comersus-backoffice-lite

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

comersus open technologies comersus backoffice plus DOWNGRADE

Affected: all versions · 4.2 · 4.5 · 4.10 · 4.11 · 4.30 · 4.32 · 5.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.2

1. Check installed version

apt-cache policy comersus-backoffice-plus || rpm -q comersus-backoffice-plus || comersus-backoffice-plus --version

2. No fixed release: DOWNGRADE to a release before 4.2 (Debian / Ubuntu)

apt-cache madison comersus-backoffice-plus sudo apt install comersus-backoffice-plus=<VERSION_BEFORE_4.2> sudo apt-mark hold comersus-backoffice-plus

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list comersus-backoffice-plus sudo dnf downgrade comersus-backoffice-plus-<VERSION_BEFORE_4.2> sudo dnf versionlock add comersus-backoffice-plus

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Comersus Backoffice 4.x/5.0/6.0 - 'comersus_Backoffice_supportError.asp?error' Cross-Site Scripting

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-2005-3397?

comersus backoffice lite: downgrade or apply the listed mitigation; comersus backoffice plus: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2005-3397 being exploited?

CVE-2005-3397 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-2005-3397 affect?

CVE-2005-3397 affects comersus backoffice lite, comersus backoffice plus. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in Comersus BackOffice allows remote attackers to inject arbitrary web script or HTML via the error parameter to comersus_backoffice_supportError.asp. NOTE: the comersus_backoffice_message.asp/messa

How urgent is CVE-2005-3397?

Priority 38/100. Public exploit reference

Related CVEs

CVE-2005-0303 MEDIUM 4.3 DOWNGRADE Multiple cross-site scripting (XSS) vulnerabilities in (1) comersus_supportError.asp or (2) comersus_backoffic
CVE-2005-0302 HIGH 7.5 DOWNGRADE SQL injection vulnerability in default.asp in BackOffice Lite 6.0 and 6.01 allows remote attackers to execute
CVE-2005-0301 HIGH 7.5 DOWNGRADE comersus_backoffice_install10.asp in BackOffice Lite 6.0 and 6.01 allows remote attackers to bypass authentica

References

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