What is CVE-2023-26213?

CVE-2023-26213 is a high-severity vulnerability in Barracuda T100b, classified under OS Command Injection. CVSS score: 7.2/10. Published 2023-03-03.

How severe is CVE-2023-26213?

High severity. CVSS v3 base score is 7.2 out of 10.

Is CVE-2023-26213 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Barracuda T100b

CVE-2023-26213

On Barracuda CloudGen WAN Private Edge Gateway devices before 8 webui-sdwan-1089-8.3.1-174141891, an OS command injection vulnerability exists in /ajax/update_certificate - a crafted HTTP request allows an authenticated attacker to execute arbitrary commands. For example, a name field can contain :password and a password field can contain shell metacharacters.

Vulnerability class: Command Injection (OS Command Injection)

Published 2023-03-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.079 (94.5th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.079 · newest: 0.079 · change: 0.000

Affected products

Barracuda T100b
Barracuda T100b Firmware — versions 8.3.1
Barracuda T193a
Barracuda T193a Firmware — versions 8.3.1
Barracuda T200c
Barracuda T200c Firmware — versions 8.3.1
Barracuda T400c
Barracuda T400c Firmware — versions 8.3.1
Barracuda T600d
Barracuda T600d Firmware — versions 8.3.1

Weakness classification (CWE)

CWE-78 — OS Command Injection

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

www.barracuda.com/products/network-security/cloudgen-wan (Product)
seclists.org/fulldisclosure/2023/Mar/2 (mailing-list, Exploit, Mailing List, Third Party Advisory)
sec-consult.com/vulnerability-lab/advisory/os-command-injection-in-barracuda-cl… (Exploit, Third Party Advisory)
campus.barracuda.com/product/cloudgenwan/doc/96024723/release-notes-8-3-1/ (Release Notes)

Frequently asked questions

What is CVE-2023-26213?: CVE-2023-26213 is a high-severity vulnerability in Barracuda T100b, classified under OS Command Injection. CVSS score: 7.2/10. Published 2023-03-03.
How severe is CVE-2023-26213?: High severity. CVSS v3 base score is 7.2 out of 10.
Is CVE-2023-26213 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.