Multiple cross-site scripting (XSS) vulnerabilities in Kerio MailServer before 6.6.2 allow remote attackers to inject arbitrary web script o
Multiple cross-site scripting (XSS) vulnerabilities in Kerio MailServer before 6.6.2 allow remote attackers to inject arbitrary web script or HTML via the (1) folder parameter to mailCompose.php or the (2) daytime parameter to calendarEdit.php. NOTE: some of these details are obtained from third party information.
- Published
- Dec 30, 2008
- Updated
- Jun 16, 2026
- EPSS
- 1.2% · 68th percentile
- CWE
- CWE-79
Sign in to follow · You’ll be notified if a followed record enters KEV, gets an exploit or is updated.
Report tools
Action score
17
Monitor
Low priority for now.
- CVSS
- 17 / 40 · 4.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.2%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| kerio | kerio mailserver | cpe:2.3:a:kerio:kerio_mailserver |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- kerio kerio mailserverup to 6.6.1 inclusive
- kerio kerio mailserver5.0
- kerio kerio mailserver5.1
- kerio kerio mailserver5.1.1
- kerio kerio mailserver5.6.3
- kerio kerio mailserver5.6.4
- kerio kerio mailserver5.6.5
- kerio kerio mailserver5.7.0
- kerio kerio mailserver5.7.1
- kerio kerio mailserver5.7.10
- kerio kerio mailserver5.7.2
- kerio kerio mailserver5.7.3
- kerio kerio mailserver5.7.4
- kerio kerio mailserver5.7.5
- kerio kerio mailserver5.7.6
- kerio kerio mailserver5.7.7
- kerio kerio mailserver5.7.8
- kerio kerio mailserver5.7.9
- kerio kerio mailserver6.0
- kerio kerio mailserver6.0.0
Same product
kerio: all recordsOther highest-scoring records for the same primary product.
- CVE-2007-3993Unspecified vulnerability in the attachment filter in Kerio MailServer before 6.4.1 has unknown impact and remote attack vectors.41Plan
- CVE-2004-2441Unspecified vulnerability in Kerio MailServer before 6.0.3 has unknown impact and unknown remote attack vectors, related to a "potential sec41Plan
- CVE-2003-0487Multiple buffer overflows in Kerio MailServer 5.6.3 allow remote authenticated users to cause a denial of service and possibly execute arbit33Monitor
- CVE-2006-1158Kerio MailServer before 6.1.3 Patch 1 allows remote attackers to cause a denial of service (application crash) via a crafted IMAP LOGIN comm32Monitor
- CVE-2008-0858Buffer overflow in the Visnetic anti-virus plugin in Kerio MailServer before 6.5.0 might allow remote attackers to execute arbitrary code vi31Monitor
- CVE-2005-1062The administration protocol for Kerio WinRoute Firewall 6.x up to 6.0.10, Personal Firewall 4.x up to 4.1.2, and MailServer up to 6.0.8 allo31Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
If successful
- Confidentiality
- none
- Integrity
- P · data or configuration can be modified
- Availability
- none
- Attack complexity
- M
- Confidentiality impact
- None
- Integrity impact
- P
- Availability impact
- None
Weakness class (CWE)
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CVSS vector
AV:N/AC:M/Au:N/C:N/I:P/A:N
nvd-primary
Root cause
User content is inserted into the page as HTML. The browser interprets the content as code rather than data.
The bug in code
The whole CWE-79 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
commentEl.innerHTML = comment.body;Fixed
commentEl.textContent = comment.body;Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- secunia.com/advisories/32955
- www.kerio.com/kms_history.html
- www.kerio.com/security_advisory.html
- www.securityfocus.com/bid/32863
- www.vupen.com/english/advisories/2008/3442
- exchange.xforce.ibmcloud.com/vulnerabilities/47397
Vendor advisories and official records. Exploit/PoC links are deliberately left out.