CVE-2024-3272
CVE-2024-3272 is a security flaw in D-Link Multiple NAS Devices, routers for homes and small offices. Attackers can run their own code on D-Link Multiple NAS Devices. The US Cybersecurity and Infrastructure Security Agency (CISA) added it to its catalog of flaws known to be used in attacks on 11 Apr 2024.[1]
D-Link Multiple NAS Devices is in things households have: home and small-office routers, so the fix matters at home as much as at work. D-Link has published a fix or advice.
Description
CISA calls it an use of hard-coded credentials in D-Link Multiple NAS Devices. In its words: “D-Link DNS-320L, DNS-325, DNS-327L, and DNS-340L contains a hard-coded credential that allows an attacker to conduct authenticated command injection, leading to remote, unauthorized code execution.”[1]
The CVE record adds: “** UNSUPPORTED WHEN ASSIGNED ** A vulnerability, which was classified as very critical, has been found in D-Link DNS-320L, DNS-325, DNS-327L and DNS-340L up to 20240403. This issue affects some unknown processing of the file /cgi-bin/nas_sharing.cgi of the component HTTP GET Request Handler. The manipulation of the argument user with the input messagebus leads to hard-coded credentials. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-259283. NOTE: This vulnerability only affects products that are no longer supported by the maintainer. NOTE: Vendor was contacted early and confirmed immediately that the product is end-of-life. It should be retired and replaced.”[2]
The underlying weakness is hard-coded credentials (CWE-798), in MITRE’s list of common software weaknesses.
It scores 9.8 out of 10 on the Common Vulnerability Scoring System, which rates it critical, scored by NVD using CVSS 3.1.[2]
Affected versions
NVD’s record doesn’t list version ranges for it; D-Link’s advisory has them[3]. CISA names the product as D-Link Multiple NAS Devices.
Every device with D-Link Multiple NAS Devices needs the update.
Exploitation
CISA added it to its catalog of known exploited vulnerabilities on 11 Apr 2024, 7 days after it was made public. CISA lists a flaw only when it has reliable evidence of it being exploited, and gave US federal agencies until 2 May 2024 to fix it.[1]
FIRST’s Exploit Prediction Scoring System, which estimates how likely a flaw is to be used in attacks in the next 30 days from what it sees across the internet, puts it at 98%. That’s in the top 1% of the flaws it scores.[4]
CISA assesses it as automatable: attackers can run it against many targets at once.
CISA doesn’t say who was attacked, or how.
Fix
D-Link has published a fix or advice.[3] CISA’s required action: “This vulnerability affects legacy D-Link products.”[1]
- Update D-Link Multiple NAS Devices now.Open the router’s app, or its admin page in a browser, and look for a firmware update. Then turn on automatic updates, so the next fix arrives on its own.
- If the maker has stopped updating it, replace it.Routers stop getting fixes after a few years, and attackers keep a list of the ones that did. If there’s no newer firmware, it won’t be fixed.
Timeline
| Date | Event |
|---|---|
| The flaw is made public in the National Vulnerability Database, with a severity score of 9.8.[2] | |
| CISA adds it to its catalog of flaws known to be used in attacks.[1] | |
| CISA’s deadline for US government agencies to fix it.[1] | |
| FIRST puts the odds of it being used in attacks in the next 30 days at 98%.[4] |
See also
Other D-Link Multiple NAS Devices flaws
- CVE-2024-3273: command injection ·
Other D-Link flaws
- CVE-2025-29635, D-Link DIR-823X: command injection ·
- CVE-2022-37055, D-Link Routers: buffer overflow ·
- CVE-2022-40799, D-Link DNR-322L: download of code without integrity check ·
- CVE-2020-25079, D-Link DCS-2530L and DCS-2670L Devices: DCS-2530L and DCS-2670L command injection ·
- CVE-2020-25078, D-Link DCS-2530L and DCS-2670L Devices: unspecified ·
Other hard-coded credentials flaws
- CVE-2026-22769, Dell RecoverPoint for Virtual Machines (RP4VMs): use of hard-coded credentials ·
- CVE-2025-14611, Gladinet CentreStack and Triofox: hard coded cryptographic ·
- CVE-2019-6693, Fortinet FortiOS: use of hard-coded credentials ·
- CVE-2021-44207, Acclaim Systems USAHERDS: use of hard-coded credentials ·
- CVE-2024-28987, SolarWinds Web Help Desk: hardcoded credential ·
Added the same day
- CVE-2024-3273, D-Link Multiple NAS Devices: command injection ·
Every D-Link flaw on CISA’s list · Everything added in April 2024
References
- ^ Cybersecurity and Infrastructure Security Agency. “D-Link Multiple NAS Devices Use of Hard-Coded Credentials Vulnerability”. Known Exploited Vulnerabilities Catalog, added 11 Apr 2024.
- ^ National Institute of Standards and Technology. “CVE-2024-3272 Detail”. National Vulnerability Database, published 4 Apr 2024.
- ^ D-Link. Advisories and fixes: supportannouncement.us.dlink.com.
- ^ FIRST. “Exploit Prediction Scoring System”. EPSS 0.981, percentile 99.9, 31 Oct 2026.
- CVE Program. “CVE-2024-3272”. The official CVE record.
This article is built from CISA’s catalog (version 2026.10.30), NVD’s record and FIRST’s scores, kept in HARD’s database and checked every morning. The plain English is HARD’s.