CVE-2025-59609: Information Disclosure when processing advertisement frames with malformed MBSSID elements of insufficient len

Routine

MEDIUM 5.5MITIGATEMITIGATEMITIGATE

CVE-2025-59609 is a medium-severity flaw (CVSS 5.5) affecting 5g fixed wireless access platform firmware, ar8035 firmware, csr8811 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Information Disclosure when processing advertisement frames with malformed MBSSID elements of insufficient length.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.1% (top 100%)
CISA exploited list	No
Weakness	CWE-126
Published	2026-06-01
Last modified	2026-07-22

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

Last updated 2026-07-22 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-01 23:16 UTCPublished CVE record published
2026-07-22 18:10 UTCUpdated Record last modified

qualcomm 5g fixed wireless access 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.

qualcomm ar8035 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 csr8811 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 fastconnect 6700 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 fastconnect 6900 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 sxr2250p 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-2025-59609?

5g fixed wireless access platform firmware: mitigate or apply the listed mitigation; ar8035 firmware: mitigate or apply the listed mitigation; csr8811 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-59609 being exploited?

CVE-2025-59609 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-2025-59609 affect?

CVE-2025-59609 affects 5g fixed wireless access platform firmware, ar8035 firmware, csr8811 firmware. Severity is medium (CVSS 5.5). Information Disclosure when processing advertisement frames with malformed MBSSID elements of insufficient length.

How urgent is CVE-2025-59609?

Priority 19/100. No elevated risk signals yet.

Software pages

Qualcomm vulnerabilities

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References

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