CVE-2026-17639 Certain HP Smart Tank All in One – Potential Denial of Service
An unauthenticated attacker can cause HP Smart Tank printers to become unavailable by sending multiple concurrent HTTP requests.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-17639?
CVE-2026-17639 is a medium-severity denial of service vulnerability in HP Smart Tank 210 Printer, published on 17 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Certain HP Smart Tank All-in-One printers may be potentially vulnerable to a denial of service condition that allows an unauthenticated attacker to cause the device to become unavailable by sending multiple concurrent HTTP requests.
Weakness: CWE-400
Which versions are affected by CVE-2026-17639?
How do I fix CVE-2026-17639?
No fix has been published for CVE-2026-17639 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-17639 being exploited?
There is no known exploitation of CVE-2026-17639 in the wild and no public exploit code.
Sources
Also known as GHSA-396p-r4hm-g85w.