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CVE-2021-20205

Libjpeg-turbo versions 2.0.91 and 2.0.90 is vulnerable to a denial of service vulnerability...

6.5 MediumFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

1.19%Up 0.4 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 6.5

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.

Record
CVE-2021-20205
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness
CWE-369
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2021-20205
Updated
2026-11-02
EUVDEUVD-2021-7649 No score

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.

Record
EUVD-2021-7649
Updated
2026-11-03
GitHub AdvisoriesGHSA-jxcf-352f-vj82 No score

Libjpeg-turbo versions 2.0.91 and 2.0.90 is vulnerable to a denial of service vulnerability...

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.

Record
GHSA-jxcf-352f-vj82
Weakness
CWE-369
Updated
2026-11-02
OSVALPINE-CVE-2021-20205 6.5

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.

Record
ALPINE-CVE-2021-20205
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVBELL-CVE-2021-20205 6.5

CVE-2021-20205 does not affect BellSoft software

Record
BELL-CVE-2021-20205
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSV 6.5

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.

Record
CVE-2021-20205
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
libjpeg-turbo
Alpine:v3.12
 before 2.1.0-r0
2.1.0-r0
libjpeg-turbo
Alpine:v3.13
 before 2.1.0-r0
2.1.0-r0
libjpeg-turbo
Alpine:v3.14
 before 2.1.0-r0
2.1.0-r0
libjpeg-turbo
Alpine:v3.15
 before 2.1.0-r0
2.1.0-r0
libjpeg-turbo
Alpine:v3.16
 before 2.1.0-r0
2.1.0-r0
libjpeg-turbo
Alpine:v3.17
 before 2.1.0-r0
2.1.0-r0
libjpeg-turbo
Alpine:v3.18
 before 2.1.0-r0
2.1.0-r0
libjpeg-turbo
Alpine:v3.19
 before 2.1.0-r0
2.1.0-r0
libjpeg-turbo
Alpine:v3.20
 before 2.1.0-r0
2.1.0-r0
libjpeg-turbo
Alpine:v3.21
 before 2.1.0-r0
2.1.0-r0
libjpeg-turbo
Alpine:v3.22
 before 2.1.0-r0
2.1.0-r0
libjpeg-turbo
Alpine:v3.23
 before 2.1.0-r0
2.1.0-r0
libjpeg-turbo
Alpine:v3.24
 before 2.1.0-r0
2.1.0-r0

History

History
RecordedChangedSources
aliases, productsEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-20205 is a medium vulnerability (CVSS 6.5) in Libjpeg-turbo, published March 10, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.19%, the 68th percentile. Fixed in libjpeg-turbo 2.1.0-r0.

References

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