What is the CVSS score of CVE-2021-20205?

CVE-2021-20205 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H. EPSS exploitation probability: 1.2%.

Is there a patch available for CVE-2021-20205?

Yes, a patch is available for CVE-2021-20205. Update the affected software to the latest version immediately.

Fedora CVE-2021-20205

MEDIUM

Divide By Zero (CWE-369)

2021-03-10 secalert@redhat.com

Denial Of Service Fedora Libjpeg Turbo Fedoraproject

6.5

CVSS 3.1 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-369 OWASP Top 10:2025 A10:2025 - Mishandling of Exceptional Conditions ASVS 5.0 V16 - Security Logging and Error Handling Division safety checks
Impact	CVSS score of 6.5 (MEDIUM). Attack characteristics: network attack vector, low complexity, no privileges required, user interaction required.
Exploit ScenarioDerived	This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

Patch available 1.2% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAI

Libjpeg-turbo versions 2.0.91 and 2.0.90 is vulnerable to a denial of service vulnerability caused by a divide by zero when processing a crafted GIF image. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-369. Libjpeg-turbo versions 2.0.91 and 2.0.90 is vulnerable to a denial of service vulnerability caused by a divide by zero when processing a crafted GIF image. Affected products include: Libjpeg-Turbo, Fedoraproject Fedora.

Know when Libjpeg Turbo gets its next vulnerability

Watch products and get an email when something new is published
Check this CVE against your own stack and servers
Exploit and PoC references, threat intelligence from 22 sources

Continue with Google Continue with GitHub

No credit card · 7-day full trial

Severity by source

NVD PRIMARY 6.5 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

DescriptionNVD

Libjpeg-turbo versions 2.0.91 and 2.0.90 is vulnerable to a denial of service vulnerability caused by a divide by zero when processing a crafted GIF image.

Threat Intelligence Overview

EPSS Score

1.2%

Top 36% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity MEDIUM

CISA KEV No

Public POC No

EPSS 1.2%

Patch available Yes

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +1

CVSS: +32

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)NVD

cpe:2.3:a:libjpeg-turbo:libjpeg-turbo:2.0.90:*:*:*:*:*:*:*

cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*

More in Libjpeg Turbo

View all

CVE-2017-9614 HIGH This Week POC

8.8 Jul 27

The fill_input_buffer function in jdatasrc.c in libjpeg-turbo 1.5.1 allows remote attackers to cause a denial of service

CVE-2020-13790 HIGH This Week POC

8.1 Jun 03

libjpeg-turbo 2.0.4, and mozjpeg 4.0.0, has a heap-based buffer over-read in get_rgb_row() in rdppm.c via a malformed PP

CVE-2017-15232 MEDIUM This Month POC

6.5 Oct 11

libjpeg-turbo 1.5.2 has a NULL Pointer Dereference in jdpostct.c and jquant1.c via a crafted JPEG file. Rated medium sev

CVE-2023-2804 MEDIUM This Month POC

6.5 May 25

A heap-based buffer overflow issue was discovered in libjpeg-turbo in h2v2_merged_upsample_internal() function of jdmrge

CVE-2018-19664 MEDIUM This Month POC

6.5 Nov 29

libjpeg-turbo 2.0.1 has a heap-based buffer over-read in the put_pixel_rows function in wrbmp.c, as demonstrated by djpe

CVE-2019-13960 MEDIUM This Month POC

5.5 Jul 18

In libjpeg-turbo 2.0.2, a large amount of memory can be used during processing of an invalid progressive JPEG image cont

CVE-2012-2806 HIGH This Week

8.8 Aug 13

Heap-based buffer overflow in the get_sos function in jdmarker.c in libjpeg-turbo 1.2.0 allows remote attackers to cause

CVE-2016-3616 HIGH This Week

8.8 Feb 13

The cjpeg utility in libjpeg allows remote attackers to cause a denial of service (NULL pointer dereference and applicat

CVE-2018-20330 HIGH This Week

8.8 Dec 21

The tjLoadImage function in libjpeg-turbo 2.0.1 has an integer overflow with a resultant heap-based buffer overflow via

CVE-2014-9092 MEDIUM This Month

6.5 Oct 10

libjpeg-turbo before 1.3.1 allows remote attackers to cause a denial of service (crash) via a crafted JPEG file, related

CVE-2018-1152 MEDIUM This Month

6.5 Jun 18

libjpeg-turbo 1.5.90 is vulnerable to a denial of service vulnerability caused by a divide by zero when processing a cra

CVE-2013-6629 MEDIUM This Month

5.0 Nov 19

The get_sos function in jdmarker.c in (1) libjpeg 6b and (2) libjpeg-turbo through 1.3.0, as used in Google Chrome befor

Same weakness CWE-369 – Divide By Zero

View all

CVE-2017-11720 CRITICAL POC

9.8

CVE-2012-0207 HIGH POC

7.5

CVE-2017-7598 HIGH POC

7.8

CVE-2016-3623 HIGH POC

7.5

CVE-2023-3896 HIGH POC

7.8

CVE-2023-1127 HIGH POC

7.8

CVE-2023-0512 HIGH POC

7.8

CVE-2021-29600 HIGH POC

7.8

Same technique Denial Of Service

View all

CVE-2015-5119 CRITICAL POC

9.8

CVE-2011-2462 CRITICAL POC

9.8

CVE-2011-0611 HIGH POC

8.8

CVE-2012-1889 HIGH POC

8.8

CVE-2012-0507 CRITICAL POC

9.8

CVE-2014-1761 HIGH POC

7.8

CVE-2015-5122 CRITICAL POC

9.8

CVE-2011-0609 HIGH POC

7.8

References

Advisories & patches

PATCH https://bugzilla.redhat.com/show_bug.cgi?id=1937385 REF https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QMLEY6HLVZAGXIOGGPPUAMRJUA6LB3FD/ REF https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TM3AHZEYGYFEDL6AW5RLEAJNVRWEJDFL/

Search Externally

GitHub PoC

Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC

Back