Is CVE-2021-3131 in the CISA KEV catalog?

No. CVE-2021-3131 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-3131?

CVE-2021-3131 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-3131?

CVE-2021-3131 has an EPSS score of 0.95% (57th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-3131?

Upgrade 1c\ to 8.3.17.1851 or later.

CVE & CISA-KEV Catalog

CVE-2021-3131

HIGH

7.5

CVSS v3

NVD

Description

The Web server in 1C:Enterprise 8 before 8.3.17.1851 sends base64 encoded credentials in the creds URL parameter.

CWE-326

How to fix

Remediation Available

1c\NVD

Affected:>= 8.0, < 8.3.17.1851Fixed in:8.3.17.1851CVE-2021-3131derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

0.95%probability of exploitation in 30 days

57thpercentile

Moderate risk: more likely to be exploited than 57% of all known CVEs.

References

Third-Party Advisory1

github.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.