CVE-2023-33277: The web interface of Gira Giersiepen Gira KNX/IP-Router 3.1.3683.0 and 3.3.8.0 allows a remote attacker to rea

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HIGH 7.5REMOTEMITIGATE

CVE-2023-33277 is a high-severity flaw (CVSS 7.5) affecting knx ip router firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The web interface of Gira Giersiepen Gira KNX/IP-Router 3.1.3683.0 and 3.3.8.0 allows a remote attacker to read sensitive files via directory-traversal sequences in the URL.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 31%)
CISA exploited list	No
Weakness	CWE-22
Published	2023-06-29
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: gira

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-06-29 16:15 UTCPublished CVE record published
2026-06-17 06:01 UTCUpdated Record last modified

gira knx ip router firmware MITIGATE

Affected: 3.1.3683.0 · 3.3.8.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.1.3683.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-33277?

knx ip router firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-33277 being exploited?

CVE-2023-33277 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-33277 affect?

CVE-2023-33277 affects knx ip router firmware. Severity is high (CVSS 7.5). The web interface of Gira Giersiepen Gira KNX/IP-Router 3.1.3683.0 and 3.3.8.0 allows a remote attacker to read sensitive files via directory-traversal sequences in the URL.

How urgent is CVE-2023-33277?

Priority 54/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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