Is CVE-2021-39271 in the CISA KEV catalog?

No. CVE-2021-39271 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-39271?

CVE-2021-39271 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2021-39271?

CVE-2021-39271 has an EPSS score of 3.68% (88th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-39271?

Upgrade bscw classic to 7.4.3 or later.

CVE & CISA-KEV Catalog

CVE-2021-39271

HIGHEPSS 88th pctl

8.8

CVSS v3

NVD

Description

OrbiTeam BSCW Classic before 7.4.3 allows authenticated remote code execution (RCE) during archive extraction via attacker-supplied Python code in the class attribute of a .bscw file. This is fixed in 5.0.12, 5.1.10, 5.2.4, 7.3.3, and 7.4.3.

How to fix

Remediation Available

bscw classicNVD

Affected:>= 7.4.0, < 7.4.3Fixed in:7.4.3CVE-2021-39271derived 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 RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

3.68%probability of exploitation in 30 days

88thpercentile

Elevated risk: more likely to be exploited than 88% of all known CVEs.

References

Exploit2

Vendor Advisory1

bscw.de

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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.