How severe is CVE-2018-5353?

CVE-2018-5353 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-5353 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-5353?

CVE-2018-5353 primarily affects Zohocorp Manageengine Adselfservice Plus. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-5353?

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-2018-5353 published?

CVE-2018-5353 was published on 2020-09-30 and last updated on 2026-07-05.

CVE-2018-5353

CVE-2018-5353 is a critical-severity vulnerability in Zohocorp Manageengine Adselfservice Plus with a CVSS 3.x base score of 9.8. 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-290.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-290
Affected product: Zohocorp Manageengine Adselfservice Plus
Published: 2020-09-30
Last modified: 2026-07-05

Description

The custom GINA/CP module in Zoho ManageEngine ADSelfService Plus before 5.5 build 5517 allows remote attackers to execute code and escalate privileges via spoofing. It does not authenticate the intended server before opening a browser window. An unauthenticated attacker capable of conducting a spoofing attack can redirect the browser to gain execution in the context of the WinLogon.exe process. If Network Level Authentication is not enforced, the vulnerability can be exploited via RDP. Additionally, if the web server has a misconfigured certificate then no spoofing attack is required

Frequently asked questions

What is CVE-2018-5353?: The custom GINA/CP module in Zoho ManageEngine ADSelfService Plus before 5.5 build 5517 allows remote attackers to execute code and escalate privileges via spoofing. It does not authenticate the intended server before opening a browser window. An unauthenticated attacker capable of conducting a spoofing attack can redirect the browser to gain execution in the context of the WinLogon.exe process. If Network Level Authentication is not enforced, the vulnerability can be exploited via RDP. Additionally, if the web server has a misconfigured certificate then no spoofing attack is required
How severe is CVE-2018-5353?: CVE-2018-5353 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-5353 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-5353?: CVE-2018-5353 primarily affects Zohocorp Manageengine Adselfservice Plus. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-5353?: 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-2018-5353 published?: CVE-2018-5353 was published on 2020-09-30 and last updated on 2026-07-05.

References

Affected products (19)

cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:*:*:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.5:-:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.5:5500:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.5:5501:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.5:5502:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.5:5503:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.5:5504:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.5:5505:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.5:5506:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.5:5507:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.5:5508:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.5:5509:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.5:5510:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.5:5511:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.5:5512:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.5:5513:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.5:5514:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.5:5515:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.5:5516:*:*:*:*:*:*

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