HOMEVULNERABILITIESCVE-2011-0550
MEDIUM

CVE-2011-0550

CWE-79Published: August 15, 2011· Updated: Jun 16, 2026

4.3
CVSS v3.1

Official Description

Multiple cross-site scripting (XSS) vulnerabilities in the Web Interface in the Endpoint Protection Manager in Symantec Endpoint Protection (SEP) 11.0.600x through 11.0.6300 allow remote attackers to inject arbitrary web script or HTML via (1) the token parameter to portal/Help.jsp or (2) the URI in a console/apps/sepm request.

NVD Source

Technical Analysis

CVE-2011-0550 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityM
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityNone
IntegrityP
AvailabilityNone
AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected Vendors & Products

symantec1 product(s)
endpoint protection
Source: NVD CPE · 5 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://secunia.com/advisories/43662
ADVISORYhttp://secunia.com/advisories/43662

All References (14)

→
http://secunia.com/advisories/43662Vendor Advisory
→
http://securitytracker.com/id?1025919
→
http://www.osvdb.org/74465
→
http://www.osvdb.org/74466
→
http://www.securityfocus.com/bid/48231
→
http://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=2011&suid=20110810_00
→
https://exchange.xforce.ibmcloud.com/vulnerabilities/69136
→
http://secunia.com/advisories/43662Vendor Advisory
→
http://securitytracker.com/id?1025919
→
http://www.osvdb.org/74465
→
http://www.osvdb.org/74466
→
http://www.securityfocus.com/bid/48231
→
http://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=2011&suid=20110810_00
→
https://exchange.xforce.ibmcloud.com/vulnerabilities/69136

Quick Facts

CVE IDCVE-2011-0550
CVSS Score4.3 / 10
SeverityMEDIUM
WeaknessCWE-79
CISA KEVNo
Affected1 vendor(s)
PublishedAug 15, 2011

Related CVEs (CWE-79)

CVE-2025-49410
10.0
CVE-2011-3046
10.0
CVE-2023-0776
10.0
CVE-2021-32671
10.0
CVE-2026-54433
10.0
CVE-2024-6886
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2011-0550 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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