CVE-2019-18922: A Directory Traversal in the Web interface of the Allied Telesis AT-GS950/8 until Firmware AT-S107 V.1.1.3 [1.

Q: How do I fix CVE-2019-18922?

at-gs950\/8 firmware: upgrade to 1.00.047. Exact commands for each OS are on this page.

Q: Is CVE-2019-18922 being exploited?

CVE-2019-18922 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-2019-18922 affect?

CVE-2019-18922 affects at-gs950\/8 firmware. Severity is high (CVSS 7.5). A Directory Traversal in the Web interface of the Allied Telesis AT-GS950/8 until Firmware AT-S107 V.1.1.3 [1.00.047] allows unauthenticated attackers to read arbitrary system files via a GET request. NOTE: This is an End-of-Life product.

Q: How urgent is CVE-2019-18922?

Priority 56/100. High severity; EPSS top 2%: very likely to be exploited; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2019-18922 is a high-severity flaw (CVSS 7.5) affecting at-gs950\/8 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Directory Traversal in the Web interface of the Allied Telesis AT-GS950/8 until Firmware AT-S107 V.1.1.3 [1.00.047] allows unauthenticated attackers to read arbitrary system files via a GET request. NOTE: This is an End-of-Life product.

Why this priority

High severity
EPSS top 2%: very likely to be exploited
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	23.9% (top 2%)
CISA exploited list	No
Weakness	CWE-22
Published	2019-11-29
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: alliedtelesis

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

Am I affected?

Timeline

2019-11-29 19:15 UTCPublished CVE record published
2026-06-17 02:25 UTCUpdated Record last modified

alliedtelesis at-gs950\/8 firmware UPGRADE

Affected: < 1.00.047

Fixed in: 1.00.047

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Nuclei scan template: Allied Telesis AT-GS950/8 - Local File Inclusion

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-2019-18922?

at-gs950\/8 firmware: upgrade to 1.00.047. Exact commands for each OS are on this page.

Is CVE-2019-18922 being exploited?

CVE-2019-18922 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-2019-18922 affect?

CVE-2019-18922 affects at-gs950\/8 firmware. Severity is high (CVSS 7.5). A Directory Traversal in the Web interface of the Allied Telesis AT-GS950/8 until Firmware AT-S107 V.1.1.3 [1.00.047] allows unauthenticated attackers to read arbitrary system files via a GET request. NOTE: This is an End-of-Life product.

How urgent is CVE-2019-18922?

Priority 56/100. High severity; EPSS top 2%: very likely to be exploited; Remotely exploitable, no login, no user action

References

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