CVE-2024-20080: In gnss service, there is a possible escalation of privilege due to improper certificate validation

This month

CRITICAL 9.8REMOTEWATCHLISTDOWNGRADEDOWNGRADEMITIGATE

CVE-2024-20080 is a critical-severity flaw (CVSS 9.8) affecting yocto, rdk-b, android. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In gnss service, there is a possible escalation of privilege due to improper certificate validation. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS08720039; Issue ID: MSV-1424.

Why this priority

Critical severity
Remotely exploitable, no login, no user action
On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-295
Published	2024-07-01
Last modified	2026-06-17

Publisher (CNA): MediaTek, Inc. · Vendor: google · linuxfoundation · rdkcentral

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-07-01 05:15 UTCPublished CVE record published
2026-06-17 07:05 UTCUpdated Record last modified

linuxfoundation yocto DOWNGRADE

Affected: 2.6 · 3.3 · 4.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.6

1. Check installed version

apt-cache policy yocto || rpm -q yocto || yocto --version

2. No fixed release: DOWNGRADE to a release before 2.6 (Debian / Ubuntu)

apt-cache madison yocto sudo apt install yocto=<VERSION_BEFORE_2.6> sudo apt-mark hold yocto

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list yocto sudo dnf downgrade yocto-<VERSION_BEFORE_2.6> sudo dnf versionlock add yocto

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

rdkcentral rdk-b DOWNGRADE

Affected: 2022q3

Fixed in: no fixed release known

Safe to downgrade to: a release before 2022q3

1. Check installed version

apt-cache policy rdk-b || rpm -q rdk-b || rdk-b --version

2. No fixed release: DOWNGRADE to a release before 2022q3 (Debian / Ubuntu)

apt-cache madison rdk-b sudo apt install rdk-b=<VERSION_BEFORE_2022q3> sudo apt-mark hold rdk-b

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list rdk-b sudo dnf downgrade rdk-b-<VERSION_BEFORE_2022q3> sudo dnf versionlock add rdk-b

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

google android MITIGATE

Affected: 13.0 · 14.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 13.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-20080?

yocto: downgrade or apply the listed mitigation; rdk-b: downgrade or apply the listed mitigation; android: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-20080 being exploited?

CVE-2024-20080 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-20080 affect?

CVE-2024-20080 affects yocto, rdk-b, android. Severity is critical (CVSS 9.8). In gnss service, there is a possible escalation of privilege due to improper certificate validation. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploi

How urgent is CVE-2024-20080?

Priority 50/100. Critical severity; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Android vulnerabilities

Related CVEs

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CVE-2025-61611 HIGH 7.5 MITIGATE In modem, there is a possible improper input validation
CVE-2025-20765 MEDIUM 4.7 DOWNGRADE MITIGATE In aee daemon, there is a possible system crash due to a race condition

References

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