Buffer overflow in Phoenix Contact Fl Nat 2008
CVE-2026-22320
A stack-based buffer overflow in the CLI's TFTP file‑transfer command handling allows a low-privileged attacker with Telnet/SSH access to trigger memory corruption by supplying unexpected or oversized filename input. Exploitation results in the corruption of the internal buffer, causing the CLI and web dashboard to become unavailable and leading to a denial of service.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (22.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Phoenix Contact Fl Nat 2008 — versions 0.0.0
- Phoenix Contact Fl Nat 2208 — versions 0.0.0
- Phoenix Contact Fl Nat 2304-2gc-2sfp — versions 0.0.0
- Phoenix Contact Fl Switch 2005 — versions 0.0.0
- Phoenix Contact Fl Switch 2008 — versions 0.0.0
- Phoenix Contact Fl Switch 2008f — versions 0.0.0
- Phoenix Contact Fl Switch 2016 — versions 0.0.0
- Phoenix Contact Fl Switch 2105 — versions 0.0.0
- Phoenix Contact Fl Switch 2108 — versions 0.0.0
- Phoenix Contact Fl Switch 2116 — versions 0.0.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-22320?
- CVE-2026-22320 is a medium-severity vulnerability in Phoenix Contact Fl Nat 2008, classified under Stack-based Buffer Overflow. CVSS score: 6.5/10. Published 2026-03-18.
- How severe is CVE-2026-22320?
- Medium severity. CVSS v3 base score is 6.5 out of 10.