CVE-2006-4953: Multiple SQL injection vulnerabilities in Neon WebMail for Java before 5.08 allow remote attackers to execute

This month

HIGH 7.5DOWNGRADE

CVE-2006-4953 is a high-severity flaw (CVSS 7.5) affecting neon webmail. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple SQL injection vulnerabilities in Neon WebMail for Java before 5.08 allow remote attackers to execute arbitrary SQL commands via the (1) adr_sortkey and (2) adr_sortkey_desc parameters in the (a) addrlist servlet, and the (3) sortkey and (4) sortkey_desc parameters in the (b) maillist servlet.

Why this priority

High severity
EPSS top 10%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	3.8% (top 10%)
CISA exploited list	No
Published	2006-09-23
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: neosys

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

Am I affected?

Timeline

2006-09-23 10:07 UTCPublished CVE record published
2026-06-16 22:30 UTCUpdated Record last modified

neosys neon webmail DOWNGRADE

Affected: 5.06 · 5.07

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.06

1. Check installed version

apt-cache policy neon-webmail || rpm -q neon-webmail || neon-webmail --version

2. No fixed release: DOWNGRADE to a release before 5.06 (Debian / Ubuntu)

apt-cache madison neon-webmail sudo apt install neon-webmail=<VERSION_BEFORE_5.06> sudo apt-mark hold neon-webmail

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

dnf --showduplicates list neon-webmail sudo dnf downgrade neon-webmail-<VERSION_BEFORE_5.06> sudo dnf versionlock add neon-webmail

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: NeoSys Neon Webmail for Java 5.06/5.07 - 'addrlist' Servlet Multiple SQL Injections
Exploit-DB: NeoSys Neon Webmail for Java 5.06/5.07 - 'maillist' Servlet Multiple SQL Injections

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-2006-4953?

neon webmail: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2006-4953 being exploited?

CVE-2006-4953 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-2006-4953 affect?

CVE-2006-4953 affects neon webmail. Severity is high (CVSS 7.5). Multiple SQL injection vulnerabilities in Neon WebMail for Java before 5.08 allow remote attackers to execute arbitrary SQL commands via the (1) adr_sortkey and (2) adr_sortkey_desc parameters in the (a) addrlist servlet, and the (3) sortke

How urgent is CVE-2006-4953?

Priority 54/100. High severity; EPSS top 10%: very likely to be exploited; Public exploit reference

Software pages

Java vulnerabilities

Related CVEs

CVE-2006-4956 MEDIUM 6.8 DOWNGRADE Cross-site scripting (XSS) vulnerability in the updateuser servlet in Neon WebMail for Java before 5.08 allows
CVE-2006-4955 MEDIUM 5.0 DOWNGRADE Directory traversal vulnerability in the downloadfile servlet in Neon WebMail for Java before 5.08 allows remo
CVE-2006-4954 HIGH 7.5 DOWNGRADE The updateuser servlet in Neon WebMail for Java before 5.08 does not validate the in_id parameter, which allow
CVE-2006-4952 HIGH 7.5 DOWNGRADE The updatemail servlet in Neon WebMail for Java before 5.08 allows remote attackers to move e-mail messages of
CVE-2006-4951 HIGH 7.5 DOWNGRADE Neon WebMail for Java before 5.08 allows remote attackers to execute arbitrary Java (JSP) code by sending an e

References

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