Is CVE-2021-31811 in the CISA KEV catalog?

No. CVE-2021-31811 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-31811?

CVE-2021-31811 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2021-31811?

CVE-2021-31811 has an EPSS score of 3.45% (88th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2021-31811?

No published fix for CVE-2021-31811 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2021-31811

MEDIUMEPSS 88th pctl

5.5

CVSS v3

NVD

Description

In Apache PDFBox, a carefully crafted PDF file can trigger an OutOfMemory-Exception while loading the file. This issue affects Apache PDFBox version 2.0.23 and prior 2.0.x versions.

CWE-789 CWE-770Allocation of Resources Without Limits or Throttling

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

TridentStack Control tracks known vulnerabilities across your Windows, macOS, and Linux fleet and shows the fix as soon as one is published. See how it works

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

3.45%probability of exploitation in 30 days

88thpercentile

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

References

Patch2

Vendor Advisory1

lists.apache.org

Third-Party Advisory3

Other references11

Related Vulnerabilities

Other CWE-789 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2022-30522	High	7.5	90%	-	Fix
CVE-2026-49975	High	7.5	11%	-	Fix
CVE-2025-27533	High	7.5	8.5%	-	Fix
CVE-2017-7651	High	7.5	5.3%	-	Fix
CVE-2021-27906	Medium	5.5	3.3%	-	Fix
CVE-2024-43484	High	7.5	2.9%	-	Fix

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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.