How severe is CVE-2018-20338?

CVE-2018-20338 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-2018-20338 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-20338?

CVE-2018-20338 primarily affects Zohocorp Manageengine Opmanager. In total, 152 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-20338?

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-2018-20338 published?

CVE-2018-20338 was published on 2018-12-21 and last updated on 2026-06-17.

CVE-2018-20338

CVE-2018-20338 is a critical-severity vulnerability in Zohocorp Manageengine Opmanager with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 12% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-89.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 12% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Zohocorp Manageengine Opmanager
Published: 2018-12-21
Last modified: 2026-06-17

Description

Zoho ManageEngine OpManager 12.3 before build 123239 allows SQL injection in the Alarms section.

Frequently asked questions

What is CVE-2018-20338?: Zoho ManageEngine OpManager 12.3 before build 123239 allows SQL injection in the Alarms section.
How severe is CVE-2018-20338?: CVE-2018-20338 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-2018-20338 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-20338?: CVE-2018-20338 primarily affects Zohocorp Manageengine Opmanager. In total, 152 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-20338?: 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-2018-20338 published?: CVE-2018-20338 was published on 2018-12-21 and last updated on 2026-06-17.

References

Affected products (152)

cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build12300:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123001:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123002:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123003:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123004:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123005:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123006:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123007:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123008:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123009:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123010:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123011:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123012:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123013:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123014:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123015:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123021:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123022:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123023:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123024:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123025:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123026:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123027:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123028:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123029:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123030:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123031:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123032:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123033:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123034:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123035:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123036:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123037:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123043:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123044:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123045:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123046:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123047:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123048:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_opmanager:12.3:build123049:*:*:*:*:*:*

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