What is CVE-2020-13818?

In Zoho ManageEngine OpManager before 125144, when is used, directory traversal validation can be bypassed.

How severe is CVE-2020-13818?

CVE-2020-13818 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-13818 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 37% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-13818?

CVE-2020-13818 primarily affects Zohocorp Manageengine Opmanager. In total, 26 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-13818?

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

When was CVE-2020-13818 published?

CVE-2020-13818 was published on 2020-06-04 and last updated on 2026-06-17.

CVE-2020-13818

CVE-2020-13818 is a high-severity vulnerability in Zohocorp Manageengine Opmanager with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 37% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-22.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 37% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Zohocorp Manageengine Opmanager
Published: 2020-06-04
Last modified: 2026-06-17

Description

In Zoho ManageEngine OpManager before 125144, when <cachestart> is used, directory traversal validation can be bypassed.

Frequently asked questions

What is CVE-2020-13818?: In Zoho ManageEngine OpManager before 125144, when <cachestart> is used, directory traversal validation can be bypassed.
How severe is CVE-2020-13818?: CVE-2020-13818 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-13818 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 37% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-13818?: CVE-2020-13818 primarily affects Zohocorp Manageengine Opmanager. In total, 26 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-13818?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-13818 published?: CVE-2020-13818 was published on 2020-06-04 and last updated on 2026-06-17.

References

Affected products (26)

cpe:2.3:a:zohocorp:manageengine_opmanager:*:*:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:-:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125000:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125002:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125100:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125101:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125102:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125108:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125110:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125111:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125112:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125113:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125114:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125116:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125117:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125118:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125120:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125121:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125123:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125124:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125125:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125136:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125137:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125139:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125140:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125143:*:*:*:*:*:*

More vulnerabilities in Zohocorp Manageengine Opmanager

CVE-2022-29535 — Critical (CVSS 9.8): Zoho ManageEngine OPManager through 125588 allows SQL Injection via a few default reports.
CVE-2021-44514 — Critical (CVSS 9.8): OpUtils in Zoho ManageEngine OpManager 12.5 before 125490 mishandles authentication for a few audit directories.
CVE-2021-41075 — Critical (CVSS 9.8): The NetFlow Analyzer in Zoho ManageEngine OpManger before 125455 is vulnerable to SQL Injection in the Attacks Module…
CVE-2021-40493 — Critical (CVSS 9.8): Zoho ManageEngine OpManager before 125437 is vulnerable to SQL Injection in the support diagnostics module. This occurs…
CVE-2021-41288 — Critical (CVSS 9.8): Zoho ManageEngine OpManager version 125466 and below is vulnerable to SQL Injection in the getReportData API.
CVE-2021-3287 — Critical (CVSS 9.8): Zoho ManageEngine OpManager before 12.5.329 allows unauthenticated Remote Code Execution due to a general bypass in the…

All CVEs affecting Zohocorp Manageengine Opmanager →

Other CWE-22 (Path Traversal) vulnerabilities

CVE-2026-48282 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Limitation of a Pathname to a Restricted…
CVE-2026-54917 — Critical (CVSS 10.0): SeaweedFS is a distributed storage system for object storage (S3), file systems, and Iceberg tables. Prior to 4.30, the…
CVE-2026-11429 — Critical (CVSS 10.0): Two endpoints in the Vault Service ScriptsController, shared by Altium Enterprise Server and Altium 365, accept file…
CVE-2026-34909 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi OS devices to…
CVE-2026-7411 — Critical (CVSS 10.0): In Eclipse BaSyx Java Server SDK versions prior to 2.0.0-milestone-10, inadequate path normalization in the Submodel…
CVE-2026-36767 — Critical (CVSS 10.0): A path traversal vulnerability in the /content/images/add endpoint of shopizer v3.2.5 allows attackers write arbitrary…

Browse all CWE-22 (Path Traversal) vulnerabilities →