How severe is CVE-2021-20080?

CVE-2021-20080 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-20080 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 93% (100th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-20080?

CVE-2021-20080 primarily affects Zohocorp Manageengine Servicedesk Plus. In total, 276 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-20080?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-20080 published?

CVE-2021-20080 was published on 2021-04-09 and last updated on 2026-06-17.

CVE-2021-20080

CVE-2021-20080 is a medium-severity vulnerability in Zohocorp Manageengine Servicedesk Plus with a CVSS 3.x base score of 6.1. Its EPSS exploit-prediction score of 93% places it in the 100th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 93% (100th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Zohocorp Manageengine Servicedesk Plus
Published: 2021-04-09
Last modified: 2026-06-17

Description

Insufficient output sanitization in ManageEngine ServiceDesk Plus before version 11200 and ManageEngine AssetExplorer before version 6800 allows a remote, unauthenticated attacker to conduct persistent cross-site scripting (XSS) attacks by uploading a crafted XML asset file.

Frequently asked questions

What is CVE-2021-20080?: Insufficient output sanitization in ManageEngine ServiceDesk Plus before version 11200 and ManageEngine AssetExplorer before version 6800 allows a remote, unauthenticated attacker to conduct persistent cross-site scripting (XSS) attacks by uploading a crafted XML asset file.
How severe is CVE-2021-20080?: CVE-2021-20080 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-20080 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 93% (100th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-20080?: CVE-2021-20080 primarily affects Zohocorp Manageengine Servicedesk Plus. In total, 276 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-20080?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-20080 published?: CVE-2021-20080 was published on 2021-04-09 and last updated on 2026-06-17.

References

https://www.tenable.com/security/research/tra-2021-11

Affected products (276)

cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:8.1:-:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:8.2:-:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:8.2:8201:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:8.2:8202:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:8.2:8203:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:8.2:8204:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:8.2:8205:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:8.2:8206:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:8.2:8207:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:8.2:8208:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:8.2:8209:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:8.2:8210:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:8.2:8211:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:8.2:8212:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:8.2:8213:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:8.2:8214:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:8.2:8215:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:8.2:8216:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:8.2:8217:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:9.0:-:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:9.0:9000:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:9.0:9001:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:9.0:9002:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:9.0:9003:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:9.0:9004:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:9.0:9005:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:9.0:9006:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:9.0:9007:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:9.0:9008:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:9.0:9009:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:9.0:9010:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:9.0:9011:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:9.0:9012:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:9.0:9013:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:9.0:9014:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:9.0:9016:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:9.0:9017:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:9.0:9018:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:9.0:9019:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:9.0:9020:*:*:*:*:*:*

More vulnerabilities in Zohocorp Manageengine Servicedesk Plus

CVE-2022-47966 — Critical (CVSS 9.8): Multiple Zoho ManageEngine on-premise products, such as ServiceDesk Plus through 14003, allow remote code execution due…
CVE-2021-44526 — Critical (CVSS 9.8): Zoho ManageEngine ServiceDesk Plus before 12003 allows authentication bypass in certain admin configurations.
CVE-2021-44077 — Critical (CVSS 9.8): Zoho ManageEngine ServiceDesk Plus before 11306, ServiceDesk Plus MSP before 10530, and SupportCenter Plus before 11014…
CVE-2021-37415 — Critical (CVSS 9.8): Zoho ManageEngine ServiceDesk Plus before 11302 is vulnerable to authentication bypass that allows a few REST-API URLs…
CVE-2019-8395 — Critical (CVSS 9.8): An Insecure Direct Object Reference (IDOR) vulnerability exists in Zoho ManageEngine ServiceDesk Plus (SDP) before 10.0…
CVE-2020-35682 — High (CVSS 8.8): Zoho ManageEngine ServiceDesk Plus before 11134 allows an Authentication Bypass (only during SAML login).

All CVEs affecting Zohocorp Manageengine Servicedesk Plus →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →