CVE-2008-2528

CRITICAL

Unspecified vulnerability in Citrix Access Gateway Standard Edition 4.5.7 and earlier and Advanced Edition 4.5 HF2 and earlier allows attackers to bypass authentication and gain "access to network ...

Affects 1 product across 1 vendor.

CVSS 2.010.0
EPSS2.7%
Percentile86th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity.
CWE Weakness Definitions
CWE-287: Improper Authentication

Software does not prove or insufficiently proves that the user is who they claim to be.

Related Attack Patterns (CAPEC)
CAPEC-57 Utilizing REST's Trust in the System Resource to Obtain Sensitive Data
via CWE-287
CAPEC-633 Token Impersonation
via CWE-287
CAPEC-650 Upload a Web Shell to a Web Server
via CWE-287
CAPEC-194 Fake the Source of Data
via CWE-287
CAPEC-593 Session Hijacking
via CWE-287
Show all 10

Mapping is CWE-to-CAPEC per MITRE CAPEC 3.9.

◆ AI Analysis — automated analysis, not human-reviewed

This vulnerability was disclosed in 2008. A critical vulnerability affects Citrix systems (CVE-2008-2528). No public exploit code is currently available. Isolate affected systems if patching is not feasible.

BSID: BS-2008-GLOBAL-021213-C • Model: rule-based-v1 • Confidence: MEDIUM

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Frequently Asked Questions
What is CVE-2008-2528?
This vulnerability was disclosed in 2008. A critical vulnerability affects Citrix systems (CVE-2008-2528). No public exploit code is currently available. Isolate affected systems if patching is not feasible.
What is the CVSS score for CVE-2008-2528?
CVE-2008-2528 has CVSS 10.0 (Critical). Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C. EPSS: 2.7%.
Is CVE-2008-2528 actively exploited?
No confirmed active exploitation of CVE-2008-2528 as of 2026-09-25.
How do I remediate CVE-2008-2528?
Priority: MEDIUM.
What systems are affected by CVE-2008-2528?
CVE-2008-2528 affects Citrix Access Gateway.
Vulnerability Details
CVE IDCVE-2008-2528
BSIDBS-2008-GLOBAL-021213-C BreachSpider Global ID
CVSS VectorAV:N/AC:L/Au:N/C:C/I:C/A:C
Published2008-06-03
Last Modified2026-06-16
ICS Relevance15%
Weakness (CWE)
Improper Authentication
Domains
NETWORK-INFRA
SourceNVD
Official Description

Unspecified vulnerability in Citrix Access Gateway Standard Edition 4.5.7 and earlier and Advanced Edition 4.5 HF2 and earlier allows attackers to bypass authentication and gain "access to network resources" via unspecified vectors.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

Vulnerability details: Unspecified vulnerability in Citrix Access Gateway Standard Edition 4.5.7 and earlier and Advanced Edition 4.5 HF2 and earlier allows attackers to bypass authentication and gain "access to network resources" via unspecified vectors. CVSS vector: AV:N/AC:L/Au:N/C:C/I:C/A:C.

Exploitation Likelihood: LOW

Affected Products
VendorProductAffected Versions
Citrix Access Gateway ≤ 4.5.7
Remediation

No official vendor advisory link on record. See the CVE record →

Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 6708 Days
CISA known-exploitedNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
AI Enrichment Record — provenance & audit hash
Modelrule-based-v1
ConfidenceMEDIUM
Enriched At2026-05-24
SHA-512 Audit Hashf771e17d23161848a41b15f79b33ff7db4270301d4505bfd6672e687fd20fd01ca8625965b97adcab1470fa2dceade8162514abb4ccddd50957cc9c1bef266ad
Related CVEs affecting Citrix
CVE-2008-0356 10.0 Buffer overflow in the Independent Management Architecture (IMA) service in C... CVE-2009-2452 10.0 Multiple unspecified vulnerabilities in Citrix Licensing 11.5 have unknown im... CVE-2000-0244 10.0 The Citrix ICA (Independent Computing Architecture) protocol uses weak encryp... CVE-2007-2850 10.0 The Session Reliability Service (XTE) in Citrix MetaFrame Presentation Server... CVE-2012-4501 10.0 Citrix Cloud.com CloudStack, and Apache CloudStack pre-release, allows remote...
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