How severe is CVE-2020-12835?

CVE-2020-12835 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-2020-12835 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-2020-12835?

CVE-2020-12835 affects Smartbear Readyapi. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-12835?

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-2020-12835 published?

CVE-2020-12835 was published on 2020-05-20 and last updated on 2026-06-17.

CVE-2020-12835

CVE-2020-12835 is a critical-severity vulnerability in Smartbear Readyapi 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-502.

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-502
Affected product: Smartbear Readyapi
Published: 2020-05-20
Last modified: 2026-06-17

Description

An issue was discovered in SmartBear ReadyAPI SoapUI Pro 3.2.5. Due to unsafe use of an Java RMI based protocol in an unsafe configuration, an attacker can inject malicious serialized objects into the communication, resulting in remote code execution in the context of a client-side Network Licensing Protocol component.

Frequently asked questions

What is CVE-2020-12835?: An issue was discovered in SmartBear ReadyAPI SoapUI Pro 3.2.5. Due to unsafe use of an Java RMI based protocol in an unsafe configuration, an attacker can inject malicious serialized objects into the communication, resulting in remote code execution in the context of a client-side Network Licensing Protocol component.
How severe is CVE-2020-12835?: CVE-2020-12835 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-2020-12835 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-2020-12835?: CVE-2020-12835 affects Smartbear Readyapi. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-12835?: 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-2020-12835 published?: CVE-2020-12835 was published on 2020-05-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:smartbear:readyapi:3.2.5:*:*:*:*:*:*:*

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