CVE-2025-21427: Information disclosure while decoding this RTP packet Payload when UE receives the RTP packet from the network

Routine

HIGH 8.2REMOTEMITIGATEMITIGATEMITIGATE

CVE-2025-21427 is a high-severity flaw (CVSS 8.2) affecting sm6250 firmware, sm6370 firmware, sm7315 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Information disclosure while decoding this RTP packet Payload when UE receives the RTP packet from the network.

Why this priority

High severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	8.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 84%)
CISA exploited list	No
Weakness	CWE-126, CWE-125
Published	2025-07-08
Last modified	2026-06-17

Publisher (CNA): Qualcomm, Inc. · Vendor: qualcomm

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

Am I affected?

Timeline

2025-07-08 13:15 UTCPublished CVE record published
2026-06-17 08:43 UTCUpdated Record last modified

qualcomm sm6250 firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

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.

qualcomm sm6370 firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

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.

qualcomm sm7315 firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

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.

qualcomm sm7325p firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

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.

qualcomm sm8550p firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

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.

qualcomm smart display 200 platform firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

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-2025-21427?

sm6250 firmware: mitigate or apply the listed mitigation; sm6370 firmware: mitigate or apply the listed mitigation; sm7315 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-21427 being exploited?

CVE-2025-21427 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-2025-21427 affect?

CVE-2025-21427 affects sm6250 firmware, sm6370 firmware, sm7315 firmware. Severity is high (CVSS 8.2). Information disclosure while decoding this RTP packet Payload when UE receives the RTP packet from the network.

How urgent is CVE-2025-21427?

Priority 38/100. High severity; Remotely exploitable, no login, no user action

Software pages

Qualcomm vulnerabilities

Related CVEs

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CVE-2025-27068 HIGH 7.8 MITIGATE MITIGATE Memory corruption while processing an IOCTL command with an arbitrary address.

References

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