CVE-2021-31811

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

3.45% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 87.9% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Low. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-06-12 09:45Z5 YR AGO

Last updated

2024-08-03 23:10Z2 YR AGO

Reserved

2021-04-26

Assigning CNA

apache

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-789Memory Allocation with Excessive Size ValueVariant
• CWE-770Allocation of Resources Without Limits or ThrottlingBase
• CWE-400Uncontrolled Resource ConsumptionClass

Data version

5.1

Document digest

f2e08d92dbd137ec0679835525d5c8c1804fc0748800fe50bc99f4fb1a3731ee

• lists.apache.orghttps://lists.apache.org/thread.html/re3bd16f0cc8f1fbda46b06a4b8241cd417f71402809baa81548fc20e%40%3Cusers.pdfbox.apache.org%3Ex_refsource_MISC
• lists.apache.org[announce] 20210612 CVE-2021-31811: Apache PDFBox: A carefully crafted PDF file can trigger an OutOfMemory-Exception while loading a tiny filehttps://lists.apache.org/thread.html/rf937c2236e6c79cdb99f76a70690dd345e53dbe0707cb506a202e43e%40%3Cannounce.apache.org%3Emailing-listx_refsource_MLIST
• www.openwall.com[oss-security] 20210612 CVE-2021-31811: Apache PDFBox: A carefully crafted PDF file can trigger an OutOfMemory-Exception while loading a tiny filehttp://www.openwall.com/lists/oss-security/2021/06/12/2mailing-listx_refsource_MLIST
• lists.apache.org[ofbiz-notifications] 20210613 [jira] [Updated] (OFBIZ-12256) Update PDFBox to 2.0.24 because of CVE-2021-31811 & CVE-2021-31812https://lists.apache.org/thread.html/rfe26bcaba564deb505c32711ba68df7ec589797dcd96ff3389a8aaba%40%3Cnotifications.ofbiz.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[ofbiz-notifications] 20210613 [jira] [Closed] (OFBIZ-12256) Update PDFBox to 2.0.24 because of CVE-2021-31811 & CVE-2021-31812https://lists.apache.org/thread.html/rd4b6db6c3b8ab3c70f1c3bbd725a40920896453ffc2744ade6afd9fb%40%3Cnotifications.ofbiz.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[ofbiz-commits] 20210613 [ofbiz-framework] branch release17.12 updated: Fixed: Update PDFBox to 2.0.24 because of CVE-2021-31811 & CVE-2021-31812 (OFBIZ-12256)https://lists.apache.org/thread.html/r143fd8445e0e778f4a85187bd79438630b96b8040e9401751fdb8aea%40%3Ccommits.ofbiz.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[ofbiz-commits] 20210613 [ofbiz-framework] branch trunk updated: Fixed: Update PDFBox to 2.0.24 because of CVE-2021-31811 & CVE-2021-31812 (OFBIZ-12256)https://lists.apache.org/thread.html/r179cc3b6822c167702ab35fe36093d5da4c99af44238c8a754c6860f%40%3Ccommits.ofbiz.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[ofbiz-notifications] 20210613 [jira] [Created] (OFBIZ-12256) Update PDFBox to 2.0.24 because of CVE-2021-31811 & CVE-2021-31812https://lists.apache.org/thread.html/r2090789e4dcc2c87aacbd87d5f18e2d64dcb9f6eb7c47f5cf7d293cb%40%3Cnotifications.ofbiz.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[ofbiz-notifications] 20210613 [jira] [Commented] (OFBIZ-12256) Update PDFBox to 2.0.24 because of CVE-2021-31811 & CVE-2021-31812https://lists.apache.org/thread.html/r132e9dbbe0ebdc08b39583d8be0a575fdba573d60a42d940228bceff%40%3Cnotifications.ofbiz.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[ofbiz-commits] 20210613 [ofbiz-framework] branch release18.12 updated: Fixed: Update PDFBox to 2.0.24 because of CVE-2021-31811 & CVE-2021-31812 (OFBIZ-12256)https://lists.apache.org/thread.html/re0cacd3fb337cdf8469853913ed2b4ddd8f8bfc52ff0ddbe61c1dfba%40%3Ccommits.ofbiz.apache.org%3Emailing-listx_refsource_MLIST
• lists.fedoraproject.orgFEDORA-2021-4a9ead5fffhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7HHWJRFXZ3PTKLJCOM7WJEYZFKFWMNSV/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-3d94c14be4https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MDJKJQOMVFDFIDS27OQJXNOYHV2O273D/vendor-advisoryx_refsource_FEDORA
• www.oracle.comhttps://www.oracle.com//security-alerts/cpujul2021.htmlx_refsource_MISC
• www.oracle.comhttps://www.oracle.com/security-alerts/cpuoct2021.htmlx_refsource_MISC
• www.oracle.comhttps://www.oracle.com/security-alerts/cpujan2022.htmlx_refsource_MISC
• www.oracle.comhttps://www.oracle.com/security-alerts/cpuapr2022.htmlx_refsource_MISC
• www.oracle.comhttps://www.oracle.com/security-alerts/cpujul2022.htmlx_refsource_MISC