CVE-2023-38935: Tenda AC1206 V15.03.06.23, AC8 V4 V16.03.34.06, AC5 V1.0 V15.03.06.28, AC10 v4.0 V16.03.10.13 and AC9 V3.0 V15

This week

CRITICAL 9.8REMOTEMITIGATEMITIGATEMITIGATE

CVE-2023-38935 is a critical-severity flaw (CVSS 9.8) affecting ac1206 firmware, ac5 firmware, ac9 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Tenda AC1206 V15.03.06.23, AC8 V4 V16.03.34.06, AC5 V1.0 V15.03.06.28, AC10 v4.0 V16.03.10.13 and AC9 V3.0 V15.03.06.42_multi were discovered to contain a tack overflow via the list parameter in the formSetQosBand function.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

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	0.9% (top 42%)
CISA exploited list	No
Weakness	CWE-787
Published	2023-08-07
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: tenda

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

Am I affected?

Timeline

2023-08-07 19:15 UTCPublished CVE record published
2026-06-17 06:11 UTCUpdated Record last modified

tenda ac1206 firmware MITIGATE

Affected: 15.03.06.23

Fixed in: no fixed release known

Safe to downgrade to: a release before 15.03.06.23

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.

tenda ac5 firmware MITIGATE

Affected: 15.03.06.28

Fixed in: no fixed release known

Safe to downgrade to: a release before 15.03.06.28

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.

tenda ac9 firmware MITIGATE

Affected: 15.03.06.42_multi

Fixed in: no fixed release known

Safe to downgrade to: a release before 15.03.06.42_multi

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.

tenda ac8 firmware MITIGATE

Affected: 16.03.34.06

Fixed in: no fixed release known

Safe to downgrade to: a release before 16.03.34.06

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.

tenda ac10 firmware MITIGATE

Affected: 16.03.10.13

Fixed in: no fixed release known

Safe to downgrade to: a release before 16.03.10.13

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-2023-38935?

ac1206 firmware: mitigate or apply the listed mitigation; ac5 firmware: mitigate or apply the listed mitigation; ac9 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-38935 being exploited?

CVE-2023-38935 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-2023-38935 affect?

CVE-2023-38935 affects ac1206 firmware, ac5 firmware, ac9 firmware. Severity is critical (CVSS 9.8). Tenda AC1206 V15.03.06.23, AC8 V4 V16.03.34.06, AC5 V1.0 V15.03.06.28, AC10 v4.0 V16.03.10.13 and AC9 V3.0 V15.03.06.42_multi were discovered to contain a tack overflow via the list parameter in the formSetQosBand function.

How urgent is CVE-2023-38935?

Priority 59/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-0581 MEDIUM 6.3 MITIGATE A vulnerability was determined in Tenda AC1206 15.03.06.23
CVE-2025-9523 CRITICAL 9.8 MITIGATE A vulnerability was detected in Tenda AC1206 15.03.06.23
CVE-2025-7544 HIGH 8.8 MITIGATE A vulnerability was found in Tenda AC1206 15.03.06.23
CVE-2025-4299 HIGH 8.8 UPGRADE A vulnerability was found in Tenda AC1206 up to 15.03.06.23
CVE-2025-4298 HIGH 8.8 UPGRADE A vulnerability was found in Tenda AC1206 up to 15.03.06.23

References

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