CVE-2020-9431

In Wireshark 3.2.0 to 3.2.1, 3.0.0 to 3.0.8, and 2.6.0 to 2.6.14, the LTE RRC dissector could...

7.5 HighFix available

In Wireshark 3.2.0 to 3.2.1, 3.0.0 to 3.0.8, and 2.6.0 to 2.6.14, the LTE RRC dissector could leak memory. This was addressed in epan/dissectors/packet-lte-rrc.c by adjusting certain append operations.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

2.71%Up 0.6 points since Apr 14, 2021

What each source reports

NVD Score used 7.5

Record: CVE-2020-9431
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-401
Updated: 2026-11-02

CVE List No score

Record: CVE-2020-9431
Updated: 2026-11-02

EUVDEUVD-2020-30251 No score

Record: EUVD-2020-30251
Updated: 2026-11-03

GitHub AdvisoriesGHSA-c77w-xw87-xvp3 No score

In Wireshark 3.2.0 to 3.2.1, 3.0.0 to 3.0.8, and 2.6.0 to 2.6.14, the LTE RRC dissector could...

Record: GHSA-c77w-xw87-xvp3
Weakness: CWE-400
Updated: 2026-11-02

OSVALPINE-CVE-2020-9431 7.5

Record: ALPINE-CVE-2020-9431
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-03

OSV 7.5

Record: CVE-2020-9431
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Show 6 moreShow less

OSVDEBIAN-CVE-2020-9431 7.5

Record: DEBIAN-CVE-2020-9431
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVOESA-2021-1132 7.5

wireshark security update

Wireshark is an open source tool for profiling network traffic and analyzing packets. Such a tool is often referred to as a network analyzer, network protocol analyzer or sniffer. Wireshark, formerly known as Ethereal, can be used to examine the details of traffic at a variety of levels ranging from connection-level information to the bits that make up a single packet. Packet capture can provide a network administrator with information about individual packets such as transmit time, source, destination, protocol type and header data. This information can be useful for evaluating security events and troubleshooting network security device issues.

Security Fix(es):

In Wireshark 3.2.0 to 3.2.1, 3.0.0 to 3.0.8, and 2.6.0 to 2.6.14, the EAP dissector could crash. This was addressed in epan/dissectors/packet-eap.c by using more careful sscanf parsing.(CVE-2020-9428)

In Wireshark 3.0.0 to 3.0.6 and 2.6.0 to 2.6.12, the CMS dissector could crash. This was addressed in epan/dissectors/asn1/cms/packet-cms-template.c by ensuring that an object identifier is set to NULL after a ContentInfo dissection.(CVE-2019-19553)

In Wireshark 3.0.0 to 3.0.2, 2.6.0 to 2.6.9, and 2.4.0 to 2.4.15, the ASN.1 BER dissector and related dissectors could crash. This was addressed in epan/asn1.c by properly restricting buffer increments.(CVE-2019-13619)

Record: OESA-2021-1132
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2020-9431 7.5

Record: UBUNTU-CVE-2020-9431
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVopenSUSE-SU-2020:0362-1 No score

Security update for wireshark

This update for wireshark and libmaxminddb fixes the following issues:

Update wireshark to new major version 3.2.2 and introduce libmaxminddb for GeoIP support (bsc#1156288).

New features include:

Added support for 111 new protocols, including WireGuard, LoRaWAN, TPM 2.0, 802.11ax and QUIC
Improved support for existing protocols, like HTTP/2
Improved analytics and usability functionalities

This update was imported from the SUSE:SLE-15:Update update project.

Record: openSUSE-SU-2020:0362-1
Updated: 2026-11-02

OSVopenSUSE-SU-2024:11513-1 No score

libwireshark14-3.4.8-1.2 on GA media

These are all security issues fixed in the libwireshark14-3.4.8-1.2 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:11513-1
Updated: 2026-11-02

OSVSUSE-SU-2020:0693-1 No score

Security update for wireshark

This update for wireshark and libmaxminddb fixes the following issues:

Update wireshark to new major version 3.2.2 and introduce libmaxminddb for GeoIP support (bsc#1156288).

New features include:

Added support for 111 new protocols, including WireGuard, LoRaWAN, TPM 2.0, 802.11ax and QUIC
Improved support for existing protocols, like HTTP/2
Improved analytics and usability functionalities

Record: SUSE-SU-2020:0693-1
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`wireshark` Alpine:v3.10	2.6.0 up to 3.0.9-r0	3.0.9-r0
`wireshark` Alpine:v3.11	2.6.0 up to 3.0.9-r0	3.0.9-r0
`wireshark` Alpine:v3.12	2.6.0 up to 3.2.2-r0	3.2.2-r0
`wireshark` Alpine:v3.13	2.6.0 up to 3.2.2-r0	3.2.2-r0
`wireshark` Alpine:v3.14	2.6.0 up to 3.2.2-r0	3.2.2-r0
`wireshark` Alpine:v3.15	2.6.0 up to 3.2.2-r0	3.2.2-r0
`wireshark` Alpine:v3.16	2.6.0 up to 3.2.2-r0	3.2.2-r0
`wireshark` Alpine:v3.17	2.6.0 up to 3.2.2-r0	3.2.2-r0
`wireshark` Alpine:v3.18	2.6.0 up to 3.2.2-r0	3.2.2-r0
`wireshark` Alpine:v3.19	2.6.0 up to 3.2.2-r0	3.2.2-r0

Show 36 moreShow less

Affected packages
Package	Affected	Fixed
`wireshark` Alpine:v3.20	2.6.0 up to 3.2.2-r0	3.2.2-r0
`wireshark` Alpine:v3.21	2.6.0 up to 3.2.2-r0	3.2.2-r0
`wireshark` Alpine:v3.22	2.6.0 up to 3.2.2-r0	3.2.2-r0
`wireshark` Alpine:v3.23	2.6.0 up to 3.2.2-r0	3.2.2-r0
`wireshark` Alpine:v3.24	2.6.0 up to 3.2.2-r0	3.2.2-r0
`wireshark` Alpine:v3.9	2.6.0 up to 2.6.15-r0	2.6.15-r0
`wireshark` Debian:12	before 3.2.2-1	3.2.2-1
`wireshark` Debian:13	before 3.2.2-1	3.2.2-1
`wireshark` Debian:14	before 3.2.2-1	3.2.2-1
`wireshark` Debian:9 From an advisory covering 17 CVEs	before 2.6.20-0+deb9u1, plus listed versions 2.2.6+g32dac6a-22.2.6+g32dac6a-2+deb9u12.2.6+g32dac6a-2+deb9u22.2.6+g32dac6a-2+deb9u32.2.7-1 Show 24 moreShow less 2.4.0-12.4.1-12.4.2-12.4.3-12.4.4-12.4.5-12.4.6-12.6.1-12.6.10-12.6.2-12.6.2-22.6.3-12.6.3-1~deb9u12.6.4-12.6.4-22.6.5-12.6.5-1~deb9u12.6.6-12.6.7-12.6.7-1~deb9u12.6.8-12.6.8-1.12.6.8-1.1~deb9u12.6.9-1	2.6.20-0+deb9u1
`wireshark` openEuler:20.03-LTS From an advisory covering 4 CVEs	before 2.6.2-19.oe1	2.6.2-19.oe1
`wireshark` openEuler:20.03-LTS-SP1 From an advisory covering 4 CVEs	before 2.6.2-19.oe1	2.6.2-19.oe1
`libmaxminddb` SUSE:Linux Enterprise Module for Basesystem 15 SP1 From an advisory covering 59 CVEs	before 1.4.2-1.3.1	1.4.2-1.3.1
`spandsp` SUSE:Linux Enterprise Module for Basesystem 15 SP1 From an advisory covering 59 CVEs	before 0.0.6-3.2.1	0.0.6-3.2.1
`wireshark` SUSE:Linux Enterprise Module for Basesystem 15 SP1 From an advisory covering 59 CVEs	before 3.2.2-3.35.2	3.2.2-3.35.2
`spandsp` SUSE:Linux Enterprise Module for Desktop Applications 15 SP1 From an advisory covering 59 CVEs	before 0.0.6-3.2.1	0.0.6-3.2.1
`wireshark` SUSE:Linux Enterprise Module for Desktop Applications 15 SP1 From an advisory covering 59 CVEs	before 3.2.2-3.35.2	3.2.2-3.35.2
`libmaxminddb` SUSE:Linux Enterprise High Performance Computing 15-ESPOS From an advisory covering 59 CVEs	before 1.4.2-1.3.1	1.4.2-1.3.1
`spandsp` SUSE:Linux Enterprise High Performance Computing 15-ESPOS From an advisory covering 59 CVEs	before 0.0.6-3.2.1	0.0.6-3.2.1
`wireshark` SUSE:Linux Enterprise High Performance Computing 15-ESPOS From an advisory covering 59 CVEs	before 3.2.2-3.35.2	3.2.2-3.35.2
`libmaxminddb` SUSE:Linux Enterprise High Performance Computing 15-LTSS From an advisory covering 59 CVEs	before 1.4.2-1.3.1	1.4.2-1.3.1
`spandsp` SUSE:Linux Enterprise High Performance Computing 15-LTSS From an advisory covering 59 CVEs	before 0.0.6-3.2.1	0.0.6-3.2.1
`wireshark` SUSE:Linux Enterprise High Performance Computing 15-LTSS From an advisory covering 59 CVEs	before 3.2.2-3.35.2	3.2.2-3.35.2
`libmaxminddb` SUSE:Linux Enterprise Server 15-LTSS From an advisory covering 59 CVEs	before 1.4.2-1.3.1	1.4.2-1.3.1
`spandsp` SUSE:Linux Enterprise Server 15-LTSS From an advisory covering 59 CVEs	before 0.0.6-3.2.1	0.0.6-3.2.1
`wireshark` SUSE:Linux Enterprise Server 15-LTSS From an advisory covering 59 CVEs	before 3.2.2-3.35.2	3.2.2-3.35.2
`libmaxminddb` SUSE:Linux Enterprise Server for SAP Applications 15 From an advisory covering 59 CVEs	before 1.4.2-1.3.1	1.4.2-1.3.1
`spandsp` SUSE:Linux Enterprise Server for SAP Applications 15 From an advisory covering 59 CVEs	before 0.0.6-3.2.1	0.0.6-3.2.1
`wireshark` SUSE:Linux Enterprise Server for SAP Applications 15 From an advisory covering 59 CVEs	before 3.2.2-3.35.2	3.2.2-3.35.2
`wireshark` Ubuntu:Pro:14.04:LTS	All versions, plus listed versions 1.10.2-11.10.3-11.10.5-1ubuntu11.10.5-21.10.6-1 Show 9 moreShow less 1.12.1+g01b65bf-4+deb8u11ubuntu0.14.04.12.6.3-1~ubuntu14.04.12.6.4-2~ubuntu14.04.12.6.5-1~ubuntu14.04.12.6.6-1~ubuntu14.04.02.6.8-1~ubuntu14.04.0~esm12.6.10-1~ubuntu14.04.0~esm12.6.10-1~ubuntu14.04.0~esm22.6.10-1~ubuntu14.04.0~esm3	None known
`wireshark` Ubuntu:Pro:16.04:LTS	All versions, plus listed versions 1.12.7+g7fc8978-11.12.8+g5b6e543-22.0.1+g59ea380-3build12.0.2+ga16e22e-12.2.6+g32dac6a-2ubuntu0.16.04 Show 8 moreShow less 2.6.3-1~ubuntu16.04.12.6.4-2~ubuntu16.04.02.6.5-1~ubuntu16.04.02.6.6-1~ubuntu16.04.02.6.8-1~ubuntu16.04.02.6.10-1~ubuntu16.04.02.6.10-1~ubuntu16.04.0+esm12.6.10-1~ubuntu16.04.0+esm2	None known
`wireshark` Ubuntu:Pro:18.04:LTS	All versions, plus listed versions 2.4.2-12.4.3-12.4.4-12.4.5-12.6.3-1~ubuntu18.04.1 Show 7 moreShow less 2.6.4-2~ubuntu18.04.02.6.5-1~ubuntu18.04.02.6.6-1~ubuntu18.04.02.6.8-1~ubuntu18.04.02.6.10-1~ubuntu18.04.02.6.10-1~ubuntu18.04.0+esm12.6.10-1~ubuntu18.04.0+esm2	None known
`libmaxminddb` openSUSE:Leap 15.1 From an advisory covering 59 CVEs	before 1.4.2-lp151.3.3.1	1.4.2-lp151.3.3.1
`spandsp` openSUSE:Leap 15.1 From an advisory covering 59 CVEs	before 0.0.6-lp151.3.3.1	0.0.6-lp151.3.3.1
`wireshark` openSUSE:Leap 15.1 From an advisory covering 59 CVEs	before 3.2.2-lp151.2.9.1	3.2.2-lp151.2.9.1
`wireshark` openSUSE:Tumbleweed From an advisory covering 163 CVEs	before 3.4.8-1.2	3.4.8-1.2

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	affected, aliases, references	OSV
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2020-9431 is a high vulnerability (CVSS 7.5) in Wireshark, published February 27, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.71%, the 86th percentile. Fixed in wireshark 3.0.9-r0.

References

Show 194 moreShow less

This page doesn't list everything

Left out here: 22 references. The JSON record has them.