If you own a Dell Inspiron, Vostro, Latitude, OptiPlex or similar machine, you may see news about a Dell security advisory and wonder whether it concerns you. You do not need to be technical to find out. This guide shows how to read an advisory page, check whether your model is listed, find the right BIOS update and compare it with the one installed. We use Dell's advisory DSA-2026-144 as the worked example, and the same steps work for any other advisory.
How do I read a Dell security advisory and find my model's BIOS update?
Short answer: Open the advisory page, read the Impact rating, then the table of affected products and fixed versions. Find your model, note the BIOS version it names, and check your installed BIOS in System Information (press Windows key and R, type msinfo32). If yours is older, download the BIOS for your model from Dell's Drivers and Downloads page.
Step 1: Know what a DSA is
DSA stands for Dell Security Advisory. It is a notice Dell publishes when a security weakness is found in its products. BIOS (the small program that starts the laptop before Windows loads) matters in advisories because it runs below Windows. An advisory is not a sign that your laptop is unsafe today. It tells you that a fix exists and where to find it.
Step 2: Read the page in the right order
Dell's advisory DSA-2026-144 covers seven OpenSSL weaknesses (OpenSSL is a widely used security software library) in client BIOS. Dell rates its Impact as High and lists Alienware, Latitude, Inspiron, OptiPlex, Precision and Dell Pro among the affected product families. Dell released the fixed BIOS versions on different dates between 24 April and 16 July 2026, model by model. The advisory page is the place to find today's list and status, because Dell may update it.
For background, earlier this year Dell published similar advisories. DSA-2026-016 (weaknesses in AMD BIOS) had its initial release on 10 February 2026, and DSA-2026-044 (another AMD BIOS weakness) had BIOS updates from February to May 2026; both are rated Impact High. DSA-2026-021 (OpenSSL in Dell Pro BIOS) was first released on 10 February 2026 and is rated Impact Medium, not High. These are only examples of how ratings differ. The steps to read them are the same.
Step 3: Find your model name
Look at the underside label of the laptop, or press the Windows key and R, type msinfo32 and Enter. Note the System Model, for example Inspiron 15 3520, and the BIOS Version/Date line. Write both down. The Service Tag (a short code on the underside label) is a dependable way to find the right downloads on Dell's support site.
Step 4: Find and compare the fixed BIOS
- Open Dell's support site and enter your Service Tag or choose your model.
- Go to Drivers and Downloads and choose the category BIOS.
- Compare the version listed with the BIOS Version in System Information.
- If your version is older, read the release notes on that page, then download the file.
Menu wording on Dell's site can differ slightly from time to time. Our guide on how to update BIOS on HP, Dell and Lenovo shows the update itself. Before you start, follow the BIOS update backup checklist. If a blue BitLocker screen follows, see the bench case on BitLocker after a BIOS update.
Power cuts and Dell BIOS updates
Never start a BIOS update during unsteady power. A power cut, a voltage dip or a loose charger during an update can leave the laptop unable to start. Plug in the charger, check that the battery is charged, and choose a time when there is no load shedding. A desktop such as an OptiPlex should be on a UPS. If your laptop has BitLocker (Windows' built-in drive lock), note your recovery key first. Do not pull the plug or press the power button while the update is running.
When to get help
- You cannot find your model in the advisory or on the support page.
- The BIOS update fails, loops or stops partway.
- The laptop will not start after an update.
- A BitLocker recovery screen appears and you do not have the key.
Our Dell BIOS service page covers BIOS updates and recovery. The Dell laptop repair hub lists our other services, and our Dell service page for Secunderabad covers visits in Hyderabad. If your Dell is under warranty, Dell's own service should be your first call; we repair laptops out of warranty or when the owner chooses independent repair. ₹149 doorstep visit fee, waived when you approve laptop repair with us.
A note from the LRW Engineer Team
Do not install a BIOS meant for a different model, even if the name looks close. A wrong file can quickly turn a security task into a repair job. Match the Service Tag or exact model, keep a photo of your current BIOS version, and update only from Dell's own support page.