How severe is CVE-2021-26550?

CVE-2021-26550 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-26550 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-26550?

CVE-2021-26550 affects Smartfoxserver. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-26550?

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

When was CVE-2021-26550 published?

CVE-2021-26550 was published on 2021-02-09 and last updated on 2026-06-17.

CVE-2021-26550

CVE-2021-26550 is a medium-severity vulnerability in Smartfoxserver with a CVSS 3.x base score of 5.5. 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-312.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 2.1
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-312
Affected product: Smartfoxserver
Published: 2021-02-09
Last modified: 2026-06-17

Description

An issue was discovered in SmartFoxServer 2.17.0. Cleartext password disclosure can occur via /config/server.xml.

Frequently asked questions

What is CVE-2021-26550?: An issue was discovered in SmartFoxServer 2.17.0. Cleartext password disclosure can occur via /config/server.xml.
How severe is CVE-2021-26550?: CVE-2021-26550 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-26550 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-26550?: CVE-2021-26550 affects Smartfoxserver. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-26550?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-26550 published?: CVE-2021-26550 was published on 2021-02-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:smartfoxserver:smartfoxserver:2.17.0:*:*:*:*:*:*:*

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