How severe is CVE-2020-25566?

CVE-2020-25566 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-2020-25566 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-25566?

CVE-2020-25566 affects Sapphireims. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-25566?

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-2020-25566 published?

CVE-2020-25566 was published on 2021-08-11 and last updated on 2026-06-17.

CVE-2020-25566

CVE-2020-25566 is a critical-severity vulnerability in Sapphireims 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-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Sapphireims
Published: 2021-08-11
Last modified: 2026-06-17

Description

In SapphireIMS 5.0, it is possible to take over an account by sending a request to the Save_Password form as shown in POC. Notice that we do not require a JSESSIONID in this request and can reset any user’s password by changing the username to that user and password to base64(desired password).

Frequently asked questions

What is CVE-2020-25566?: In SapphireIMS 5.0, it is possible to take over an account by sending a request to the Save_Password form as shown in POC. Notice that we do not require a JSESSIONID in this request and can reset any user’s password by changing the username to that user and password to base64(desired password).
How severe is CVE-2020-25566?: CVE-2020-25566 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-2020-25566 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-25566?: CVE-2020-25566 affects Sapphireims. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-25566?: 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-2020-25566 published?: CVE-2020-25566 was published on 2021-08-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:sapphireims:sapphireims:5.0:*:*:*:*:*:*:*

More vulnerabilities in Sapphireims

CVE-2020-25565 — Critical (CVSS 9.8): In SapphireIMS 5.0, it is possible to use the hardcoded credential in clients (username: sapphire, password: ims) and…
CVE-2020-25563 — Critical (CVSS 9.8): In SapphireIMS 5.0, it is possible to create local administrator on any client without requiring any credentials by…
CVE-2020-25560 — Critical (CVSS 9.8): In SapphireIMS 5.0, it is possible to use the hardcoded credential in clients (username: sapphire, password: ims) and…
CVE-2020-25564 — High (CVSS 8.8): In SapphireIMS 5.0, it is possible to create local administrator on any client with credentials of a non-privileged…
CVE-2017-16630 — High (CVSS 8.8): In SapphireIMS 4097_1, a guest user can create a local administrator account on any system that has SapphireIMS…
CVE-2020-25561 — High (CVSS 7.8): SapphireIMS 5 utilized default sapphire:ims credentials to connect the client to server. This credential is saved in…

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