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CVE-2021-27807

21
FAUCET Score

CVE-2021-27807 describes a denial-of-service vulnerability in Apache PDFBox versions 2.0.22 and earlier, where a specially crafted PDF file can induce an infinite loop during loading. This issue primarily impacts Apache PDFBox, with associated products including Fedora and Oracle. Rated as Medium severity (CVSS 5.5), it requires user interaction (UI:R) to open the malicious file, leading to high availability impact (A:H) but no confidentiality or integrity compromise. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.0.0, <= 2.0.22CPE matchmatch criteria
cpe:2.3:a:apache:pdfbox:*:*:*:*:*:*:*:*
32CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
33CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
34CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
14.2.0CPE matchmatch criteria
cpe:2.3:a:oracle:banking_trade_finance_process_management:14.2.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.98%
Probability of exploitation in next 30 days
EPSS Percentile
85.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0298 is in the 95th percentile among its peer group of 5,765 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

mavenpatch availablevia ghsa
Product: org.apache.pdfbox:pdfboxFixed in: 2.0.23
oraclepatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Fuse 7.9Fixed in: pdfbox
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Integration
View patch
redhatno patchvia redhat_api
Product: Red Hat Integration Camel K 1Fixed in: pdfbox

Vendor Advisories (2)

mavenGHSA-2h3j-m7gr-25xjmedium

Excessive Iteration Denial of Service in Apache PDFBox

Jun 16, 2021
redhatCVE-2021-27807Moderate

pdfbox: infinite loop while loading a crafted PDF file

Mar 19, 2021

References

lists.apache.org / thread.html/r043edc5dcf9199f7f882ed7906b41cb816753766e88b8792dbf319a9%40%3Cannounce.apache.org%3E
lists.apache.org / thread.html/r1218e60c32829f76943ecaca79237120c2ec1ab266459d711a578b50%40%3Cdev.pdfbox.apache.org%3E
lists.apache.org / thread.html/r1d268642f8b52456ee8f876b888b8ed7a9e9568c7770789f3ded7f9e%40%3Ccommits.ofbiz.apache.org%3E
lists.apache.org / thread.html/r4717f902f8bc36d47b3fa978552a25e4ed3ddc2fffb52b94fbc4ab36%40%3Cusers.pdfbox.apache.org%3E
lists.apache.org / thread.html/r4cbc3f6981cd0a1a482531df9d44e4c42a7f63342a7ba78b7bff8a1b%40%3Cnotifications.james.apache.org%3E
lists.apache.org / thread.html/r54594251369e14c185da9662a5340a52afbbdf75d61c9c3a69c8f2e8%40%3Cdev.pdfbox.apache.org%3E
lists.apache.org / thread.html/r5c8e2125d18af184c80f7a986fbe47eaf0d30457cd450133adc235ac%40%3Ccommits.ofbiz.apache.org%3E
lists.apache.org / thread.html/r6e067a6d83ccb6892d0ff867bd216704f21fb0b6a854dea34be04f12%40%3Cnotifications.ofbiz.apache.org%3E
lists.apache.org / thread.html/r7ee634c21816c69ce829d0c41f35afa2a53a99bdd3c7cce8644fdc0e%40%3Cnotifications.ofbiz.apache.org%3E
lists.apache.org / thread.html/r818058ff1e4b9f6bef4e5a2e74faff38cb3d3885c1e2db398bc55cfb%40%3Cusers.pdfbox.apache.org%3E
Mailing ListVendor Advisory
lists.apache.org / thread.html/r9ffe179385637b0b5cbdabd0246118005b4b8232909d2d14cd68ccd3%40%3Ccommits.ofbiz.apache.org%3E
lists.apache.org / thread.html/raa35746227f3f8d50fff1db9899524423a718f6f35cd39bd4769fa6c%40%3Cnotifications.ofbiz.apache.org%3E
lists.apache.org / thread.html/rc69140d894c6a9c67a8097a25656cce59b46a5620c354ceba10543c3%40%3Cnotifications.ofbiz.apache.org%3E
lists.apache.org / thread.html/re1e35881482e07dc2be6058d9b44483457f36133cac67956686ad9b9%40%3Cnotifications.ofbiz.apache.org%3E
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/2AVLKAHFMPH72TTP25INPZPGX5FODK3H
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/6KDA2U4KL2N3XT3PM4ZJEBBA6JJIH2G4
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/6PT72QOFDXLJ7PLTN66EMG5EHPTE7TFZ
oracle.com / security-alerts/cpuapr2022.html
Third Party Advisory
oracle.com / /security-alerts/cpujul2021.html
PatchThird Party Advisory
oracle.com / security-alerts/cpuoct2021.html
PatchThird Party Advisory
openwall.com / lists/oss-security/2021/03/19/9
Mailing ListVendor Advisory