CVE-2026-30814: A stack-based buffer overflow in the tmpServer module of TP-Link Archer AX53 v1.0 allows an authenticated adja

Q: How do I fix CVE-2026-30814?

archer ax53 firmware: upgrade to 1.7.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-30814 being exploited?

CVE-2026-30814 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-30814 affect?

CVE-2026-30814 affects archer ax53 firmware. Severity is high (CVSS 8.0). A stack-based buffer overflow in the tmpServer module of TP-Link Archer AX53 v1.0 allows an authenticated adjacent attacker to trigger a segmentation fault and potentially execute arbitrary code via a specially crafted configuration file. S

Routine

HIGH 8.0UPGRADE

CVE-2026-30814 is a high-severity flaw (CVSS 8.0) affecting archer ax53 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A stack-based buffer overflow in the tmpServer module of TP-Link Archer AX53 v1.0 allows an authenticated adjacent attacker to trigger a segmentation fault and potentially execute arbitrary code via a specially crafted configuration file. Successful exploitation may cause a crash and could allow arbitrary code execution, enabling modification of device state, exposure of sensitive data, or further compromise of device integrity. This issue affec

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.0 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 64%)
CISA exploited list	No
Weakness	CWE-121, CWE-787
Published	2026-04-08
Last modified	2026-07-25

Publisher (CNA): TPLink · Vendor: tp-link

Last updated 2026-07-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-08 19:25 UTCPublished CVE record published
2026-07-25 11:10 UTCUpdated Record last modified

tp-link archer ax53 firmware UPGRADE

Affected: < 1.7.1

Fixed in: 1.7.1

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-2026-30814?

archer ax53 firmware: upgrade to 1.7.1. Exact commands for each OS are on this page.

Is CVE-2026-30814 being exploited?

CVE-2026-30814 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-2026-30814 affect?

CVE-2026-30814 affects archer ax53 firmware. Severity is high (CVSS 8.0). A stack-based buffer overflow in the tmpServer module of TP-Link Archer AX53 v1.0 allows an authenticated adjacent attacker to trigger a segmentation fault and potentially execute arbitrary code via a specially crafted configuration file. S

How urgent is CVE-2026-30814?

Priority 37/100. High severity

Software pages

TP-Link vulnerabilities

Related CVEs

CVE-2026-30815 HIGH 8.0 UPGRADE An OS command injection vulnerability in the OpenVPN module of TP-Link Archer AX53 v1.0 allows an authenticate
CVE-2026-30818 HIGH 8.0 UPGRADE An OS command injection vulnerability in the dnsmasq module of TP-Link Archer AX53 v1.0 allows an authenticate
CVE-2026-30817 MEDIUM 5.7 UPGRADE An external configuration control vulnerability in the OpenVPN module of TP-Link AX53 v1.0 allows an authentic
CVE-2026-30816 MEDIUM 5.7 UPGRADE An external control of configuration vulnerability in the OpenVPN module of TP-Link AX53 v1.0 allows an authen

References

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