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CVE-2020-9759

webOS TV Emulator privilege escalation vulnerability

4.6 MediumFix available

CVE-2020-9759 is a medium vulnerability (CVSS 4.6) in Lg Webos, published March 23, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.47%, the 40th percentile. Fixed in weechat 2.7.1-1.

A Vulnerability of LG Electronic web OS TV Emulator could allow an attacker to escalate privileges and overwrite certain files. This vulnerability is due to wrong environment setting. An attacker could exploit this vulnerability through crafted configuration files and executable files.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
Low
User interaction
Required

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
None

Exploit likelihood

0.47%Unchanged since Apr 14, 2021
90%50%10%1%

What each source reports

CVE List Score used 4.6

webOS TV Emulator privilege escalation vulnerability

A Vulnerability of LG Electronic web OS TV Emulator could allow an attacker to escalate privileges and overwrite certain files. This vulnerability is due to wrong environment setting. An attacker could exploit this vulnerability through crafted configuration files and executable files.

Record
CVE-2020-9759
CVSS 3.1
4.6 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Updated
2026-11-02
EUVDEUVD-2020-30538 4.6

A Vulnerability of LG Electronic web OS TV Emulator could allow an attacker to escalate privileges and overwrite certain files. This vulnerability is due to wrong environment setting. An attacker could exploit this vulnerability through crafted configuration files and executable files.

Record
EUVD-2020-30538
CVSS 3.1
4.6 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Updated
2026-11-03
GitHub AdvisoriesGHSA-j24f-gw9v-x4vp 7.8

An issue was discovered in WeeChat before 2.7.1 (0.4.0 to 2.7 are affected). A malformed message...

An issue was discovered in WeeChat before 2.7.1 (0.4.0 to 2.7 are affected). A malformed message 352 (who) can cause a NULL pointer dereference in the callback function, resulting in a crash.

Record
GHSA-j24f-gw9v-x4vp
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-476, CWE-494
Updated
2026-11-02
NVD 4.6

A Vulnerability of LG Electronic web OS TV Emulator could allow an attacker to escalate privileges and overwrite certain files. This vulnerability is due to wrong environment setting. An attacker could exploit this vulnerability through crafted configuration files and executable files.

Record
CVE-2020-9759
CVSS 3.1
4.6 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0
9.3 HighAV:N/AC:M/Au:N/C:C/I:C/A:C
Weakness
CWE-494
Updated
2026-11-02
OSV 7.8

A Vulnerability of LG Electronic web OS TV Emulator could allow an attacker to escalate privileges and overwrite certain files. This vulnerability is due to wrong environment setting. An attacker could exploit this vulnerability through crafted configuration files and executable files.

Record
CVE-2020-9759
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2020-9759 7.8

A Vulnerability of LG Electronic web OS TV Emulator could allow an attacker to escalate privileges and overwrite certain files. This vulnerability is due to wrong environment setting. An attacker could exploit this vulnerability through crafted configuration files and executable files.

Record
DEBIAN-CVE-2020-9759
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2020-9759 7.8

A Vulnerability of LG Electronic web OS TV Emulator could allow an attacker to escalate privileges and overwrite certain files. This vulnerability is due to wrong environment setting. An attacker could exploit this vulnerability through crafted configuration files and executable files.

Record
UBUNTU-CVE-2020-9759
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 3.1
4.6 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Updated
2026-11-02
OSVMGASA-2020-0153 No score

Updated weechat packages fix security vulnerabilities

Updated weechat packages fix security vulnerabilities:

An issue was discovered in WeeChat before 2.7.1 (0.4.0 to 2.7 are affected). A malformed message 352 (who) can cause a NULL pointer dereference in the callback function, resulting in a crash (CVE-2020-9759).

An issue was discovered in WeeChat before 2.7.1 (0.3.4 to 2.7 are affected). When a new IRC message 005 is received with longer nick prefixes, a buffer overflow and possibly a crash can happen when a new mode is set for a nick (CVE-2020-9760).

Record
MGASA-2020-0153
Updated
2026-11-02
OSVUSN-5258-1 No score

weechat vulnerabilities

Stuart Nevans Locke discovered that WeeChat's relay plugin insecurely handled malformed websocket frames. A remote attacker in control of a server could possibly use this issue to cause denial of service in a client. (CVE-2021-40516)

Stuart Nevans Locke discovered that WeeChat insecurely handled certain IRC messages. A remote attacker in control of a server could possibly use this issue to cause denial of service in a client. This issue only affected Ubuntu 16.04 ESM and Ubuntu 18.04 ESM. (CVE-2020-9760)

Stuart Nevans Locke discovered that WeeChat insecurely handled certain IRC messages. A remote unauthenticated attacker could possibly use these issues to cause denial of service in a client. These issues only affected Ubuntu 16.04 ESM and Ubuntu 18.04 ESM. (CVE-2020-9759, CVE-2020-8955)

Joseph Bisch discovered that WeeChat's logger incorrectly handled certain memory operations when handling log file names. A remote attacker could possibly use this issue to cause denial of service in a client. This issue only affected Ubuntu 16.04 ESM. (CVE-2017-14727)

Record
USN-5258-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
weechat
Debian:12
before 2.7.1-1
2.7.1-1
weechat
Debian:13
before 2.7.1-1
2.7.1-1
weechat
Debian:14
before 2.7.1-1
2.7.1-1
weechat
Debian:8
before 1.0.1-1+deb8u3, plus listed versions
1.0.1-11.0.1-1+deb8u11.0.1-1+deb8u1~bpo70+11.0.1-1+deb8u2
1.0.1-1+deb8u3
weechat
Debian:9
before 1.6-1+deb9u3, plus listed versions
1.6-1+deb9u11.6-1+deb9u2
1.6-1+deb9u3
weechat
Mageia:7
before 2.7.1-1.mga7
2.7.1-1.mga7
weechat
Ubuntu:Pro:16.04:LTS
before 1.4-2ubuntu0.1+esm1, plus listed versions
1.3-11.3-1build11.4-11.4-1build11.4-1build21.4-21.4-2ubuntu0.1
1.4-2ubuntu0.1+esm1
weechat
Ubuntu:Pro:18.04:LTS
before 1.9.1-1ubuntu1+esm1, plus listed versions
1.9.1-11.9.1-1build11.9.1-1ubuntu1
1.9.1-1ubuntu1+esm1
weechat
Ubuntu:Pro:20.04:LTS
before 2.8-1ubuntu0.1~esm1, plus listed versions
2.6-22.6-2build12.6-2build22.6-2ubuntu12.6-2ubuntu22.8-1
2.8-1ubuntu0.1~esm1

History

History
WhenChangedSources
2026-11-03aliases, publishedEUVD
2026-11-02createdCVE List, GitHub Advisories, NVD, OSV

References

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