CVE-2024-11667
A directory traversal vulnerability in the web management interface of Zyxel ATP series firmware versions V5.00 through V5.38, USG FLEX series firmware versions V5.00 through V5.38, USG FLEX 50(W) series firmware versions V5.10 through V5.38, and USG20(W)-VPN series firmware versions V5.10 through V5.38 could allow an attacker to download or upload files via a crafted URL.
do firstApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Can a WAF block it? Yes. The vulnerability involves directory traversal via crafted URLs in the web management interface, which can be detected by matching unusual ../ sequences in URL paths that normal users do not use. A WAF rule can match crafted URL with ../ sequences in the web management interface. No tracked WAF vendor has published a rule for this CVE yet, so you would write it yourself.
What a custom rule would match: crafted URL with ../ sequences in the web management interface
Also consider: patch · custom WAF rule · canonical path validation
Based on an AI reading of the CVE description, and no vendor rule found yet. We check Cloudflare, AWS, Google Cloud Armor and Azure; for Akamai, Imperva, Fastly, F5, ask your vendor.
Is CVE-2024-11667 being exploited?
Yes. CVE-2024-11667 appears in CISA's Known Exploited Vulnerabilities catalog, which means exploitation in the wild has been confirmed and reported. Treat it as active rather than theoretical, and patch it ahead of higher-scoring vulnerabilities that carry no exploitation evidence.
How severe is CVE-2024-11667?
CVE-2024-11667 is rated High with a CVSS score of 7.5. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2024-11667?
Yes. A fix has been recorded for CVE-2024-11667. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2024-11667 affect?
CVE-2024-11667 affects zyxel:zld. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
- affectedversions V5.00 through V5.38
- affectedversions V5.10 through V5.38
- affectedversions V5.10 through V5.38
- affectedversions V5.00 through V5.38
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.
cisa ssvc
- exploitation
- active
- automatable
- yes
- technical impact
- partial
Assessed by CISA 5 Dec 2024 (SSVC 2.0.3).
timeline
- 27 Nov 2024Published
- 3 Dec 2024Added to CISA KEV (exploited in the wild) · 6 days later
- 5 Dec 2024CISA SSVC assessment: exploitation active · 2 days later
- 24 Dec 2024CISA remediation due date (US federal agencies) · 19 days later
- 5 Aug 2026CVE record last updated · 589 days (about 2 years) later
- 2 Nov 2026Analysed by vulneraibility.com · 90 days (about 3 months) later
sources
- CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
- NVD: CVSS and CPE data
- CISA KEV catalog: exploitation, date added, due date
- CISA Vulnrichment (ADP): SSVC decision points
- FIRST EPSS: exploit probability and percentile
- Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.