How severe is CVE-2008-2528?

CVE-2008-2528 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2008-2528 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-2528?

CVE-2008-2528 primarily affects Citrix Access Gateway. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-2528?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2008-2528 published?

CVE-2008-2528 was published on 2008-06-03 and last updated on 2026-06-16.

CVE-2008-2528

CVE-2008-2528 is a critical-severity vulnerability in Citrix Access Gateway with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Citrix Access Gateway
Published: 2008-06-03
Last modified: 2026-06-16

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.

Frequently asked questions

What is CVE-2008-2528?: 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.
How severe is CVE-2008-2528?: CVE-2008-2528 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2008-2528 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-2528?: CVE-2008-2528 primarily affects Citrix Access Gateway. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-2528?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2008-2528 published?: CVE-2008-2528 was published on 2008-06-03 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:citrix:access_gateway:*:advanced:hf2:*:*:*:*:*
cpe:2.3:a:citrix:access_gateway:*:*:standard:*:*:*:*:*
cpe:2.3:a:citrix:access_gateway:4.5.5:*:standard:*:*:*:*:*
cpe:2.3:a:citrix:access_gateway:4.5.6:*:standard:*:*:*:*:*

More vulnerabilities in Citrix Access Gateway

CVE-2011-2883 — Critical (CVSS 9.3): The NSEPA.NsepaCtrl.1 ActiveX control in nsepa.ocx in Citrix Access Gateway Enterprise Edition 8.1 before 8.1-67.7, 9.0…
CVE-2011-2882 — Critical (CVSS 9.3): Stack-based buffer overflow in the NSEPA.NsepaCtrl.1 ActiveX control in nsepa.ocx in Citrix Access Gateway Enterprise…
CVE-2010-4566 — Critical (CVSS 9.3): The web authentication form in the NT4 authentication component in Citrix Access Gateway Enterprise Edition 9.2-49.8…
CVE-2007-4013 — Critical (CVSS 9.3): Multiple unspecified vulnerabilities in (1) Net6Helper.DLL (aka Net6Launcher Class) 4.5.2 and earlier, (2) npCtxCAO.dll…
CVE-2007-4017 — High (CVSS 7.6): Cross-site request forgery (CSRF) vulnerability in the web-based administration console in Citrix Access Gateway before…
CVE-2007-4016 — Medium (CVSS 6.8): Unspecified vulnerability in the client components in Citrix Access Gateway Standard Edition before 4.5.5 and Advanced…

All CVEs affecting Citrix Access Gateway →

Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-20317 — Critical (CVSS 10.0): As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Workload engineering…
CVE-2026-19977 — Critical (CVSS 10.0): A vulnerability was detected in EFM ipTIME A3004T 14.19.0. The affected element is the function…
CVE-2026-59500 — Critical (CVSS 10.0): CWE-287: Improper Authentication
CVE-2024-27253 — Critical (CVSS 10.0): IBM DOORS Next 7.0.3 through 7.0.3 Interim Fix 018 could allow an authenticated user to bypass security logic to…
CVE-2026-56162 — Critical (CVSS 10.0): Improper authentication in Azure SQL Database allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-62825 — Critical (CVSS 10.0): Improper authentication in Azure Key Vault allows an unauthorized attacker to elevate privileges over a network.

Browse all CWE-287 (Improper Authentication) vulnerabilities →