CVE-2021-47353

mediumpriority · track · 22EPSS 0.003 · 24 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.31% (24th) EPSS

CVSS 5.5 · medium

Is it mine?

41 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-28

In the Linux kernel, the following vulnerability has been resolved: udf: Fix NULL pointer dereference in udf_symlink function In function udf_symlink, epos.bh is assigned with the value returned by udf_tgetblk. The function udf_tgetblk is defined in udf/misc.c and returns the value of sb_getblk function that could be NULL. Then, epos.bh is used without any check, causing a possible NULL pointer dereference when sb_getblk fails. This fix adds a check to validate the value of epos.bh.

cvss

Technical severity, 0–10. One row per scoring source.

5.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 3.6

v3.15.5mediumAV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.15.1mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-476USprimaryCWE-476US

affected products (41)

Products and version ranges known to be affected.

IBM Business Automation Workflow 24.0.0all versionscert_bundDEcpe:/a:ibm:business_automation_workflow:24.0.0
IBM QRadar SIEM <7.5.0 UP9 IF02all versionscert_bundDE
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
IBM QRadar SIEM< 7.5.0 UP9 IF02cert_bundDE
Linux Linux≤ 2.6.12enisa_euvdEU
Linux Linuxall versionsenisa_euvdEU
Linux Linux< 4.14.240enisa_euvdEU
Linux Linux< 4.19.198enisa_euvdEU
Linux Linux< 4.4.276enisa_euvdEU
Linux Linux< 4.9.276enisa_euvdEU
Linux Linux< 5.10.51enisa_euvdEU
Linux Linux< 5.12.18enisa_euvdEU
Linux Linux< 5.13.3enisa_euvdEU
Linux Linux< 5.14enisa_euvdEU
Linux Linux< 5.4.133enisa_euvdEU
Linux Linux1da177e4c3f4… → 21bf1414580c…enisa_euvdEU
Linux Linux1da177e4c3f4… → 2f3d9ddd32a2…enisa_euvdEU
Linux Linux1da177e4c3f4… → 3638705ecd5a…enisa_euvdEU
Linux Linux1da177e4c3f4… → 371566f63cbd…enisa_euvdEU

showing 20 of 41

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2024-1905IBM QRadar SIEM: Mehrere SchwachstellenDeutsch2024-08-21csaf · cert_bundDE
Ein entfernter, anonymer oder lokaler Angreifer kann mehrere Schwachstellen in IBM QRadar SIEM ausnutzen, um seine Privilegien zu erhöhen, beliebigen Code auszuführen, Daten zu manipulieren, vertrauliche Informationen offenzulegen, eine Man-in-the-Middle-Situation zu schaffen, Sicherheitsmaßnahmen zu umgehen oder eine Denial-of-Service-Situation zu schaffen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund NVD CVE.org MITRE

published 2024-05-21modified 2026-06-17

related (8,822)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2026-21525US	—OT critical	4.87% (92nd)	KEV	2026-02-10
Null pointer dereference in Windows Remote Access Connection Manager allows an unauthorized attacker to deny service locally.
CVE-2010-0425US	high10.0	94.2% (100th)	Exploit	2010-03-05
modules/arch/win32/mod_isapi.c in mod_isapi in the Apache HTTP Server 2.0.37 through 2.0.63, 2.2.0 through 2.2.14, and 2.3.x before 2.3.7, when running on Windows, does not ensure…
CVE-2012-0779US	high9.3	87.1% (100th)	Exploit	2012-05-04
Adobe Flash Player before 10.3.183.19 and 11.x before 11.2.202.235 on Windows, Mac OS X, and Linux; before 11.1.111.9 on Android 2.x and 3.x; and before 11.1.115.8 on Android 4.x a…
CVE-2012-5896US	high10.0	68.7% (99th)	Exploit	2012-11-17
The Annotation Objects Extension ActiveX control in AnnotateX.dll in Quest InTrust 10.4.0.853 and earlier does not properly implement the Add method, which allows remote attackers…
CVE-2003-0772US	high7.5	84.9% (100th)	Exploit	2003-09-22
Multiple buffer overflows in WS_FTP 3 and 4 allow remote authenticated users to cause a denial of service and possibly execute arbitrary code via long (1) APPE (append) or (2) STAT…

+8817 more

references (28)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan