CVE-2024-29973
CriticalExploitedPublic exploitUNSUPPORTED WHEN ASSIGNED The command injection vulnerability in the “setCookie” parameter in Zyxel NAS326 firmware versions before V5.21(AAZF.17)C0 and NAS542 firmware versions before V5.21(ABAG.14)C0 could allow an unauthenticated attacker to execute some operating system (OS)…
Published Jun 7, 2024 · Updated Aug 2, 2024
Key Facts
Patch immediately- CVE-2024-29973 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting NAS326 firmware (Zyxel), NAS542 firmware (Zyxel).
- It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Jun 24, 2024. Public exploit code is available.
- EPSS estimates a 86% probability of exploitation in the next 30 days.
- Fixed versions are available, including NAS326 firmware 5.21\(aazf.17\)c0, NAS542 firmware 5.21\(abag.14\)c0.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
86%
Higher than 99.7% of all scored CVEs
Exploited in the wild
Yes
2 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
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Description
UNSUPPORTED WHEN ASSIGNED The command injection vulnerability in the “setCookie” parameter in Zyxel NAS326 firmware versions before V5.21(AAZF.17)C0 and NAS542 firmware versions before V5.21(ABAG.14)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands by sending a crafted HTTP POST request.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Jun 24, 2024 | n/a | Not reported |
| CIRCL KEV | Jun 27, 2024 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
4 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| NAS326 firmwareZyxel | >= < V5.21(AAZF.17)C0 | 5.21\(aazf.17\)c0 |
| NAS542 firmwareZyxel | >= < V5.21(ABAG.14)C0 | 5.21\(abag.14\)c0 |
Patched Releases
NAS326 firmware
5.21\(aazf.17\)c0
NAS542 firmware
5.21\(abag.14\)c0
Timeline
Publicly disclosed
Jun 7, 2024
Added to Industry KEV feed
Jun 24, 2024
Added to CIRCL KEV
Jun 27, 2024
Last updated
Aug 2, 2024
Weakness Type
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
References
- advisoryhttps://outpost24.com/blog/zyxel-nas-critical-vulnerabilities/
- advisoryUSOM advisory
- advisoryhttps://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-nas-products-06-04-2024
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
UNSUPPORTED WHEN ASSIGNED The command injection vulnerability in the “setCookie” parameter in Zyxel NAS326 firmware versions before V5.21(AAZF.17)C0 and NAS542 firmware versions before V5.21(ABAG.14)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands by sending a crafted HTTP POST…
Affected: NAS326 firmware (Zyxel) versions >= < V5.21(AAZF.17)C0; NAS542 firmware (Zyxel) versions >= < V5.21(ABAG.14)C0. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Jun 24, 2024.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including NAS326 firmware 5.21\(aazf.17\)c0, NAS542 firmware 5.21\(abag.14\)c0.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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