No exploitation reportedFix available

CVE-2023-44321

Q: Is CVE-2023-44321 actively exploited?

Active exploitation of CVE-2023-44321 has not been confirmed. Its EPSS score was 1.0% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2023-44321?

CVE-2023-44321 has a CVSS v3 base score of 6.5 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

No exploitation reported by the sources we read.

Published2023-11-14
Fixed in4.5
WeaknessCWE-400

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Affected devices do not properly validate the length of inputs when performing certain configuration changes in the web interface allowing an authenticated attacker to cause a denial of service condition. The device needs to be restarted for the web interface to become available again.

Timeline

dates in UTC

2023-11-1411:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-44321?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-44321?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Siemens 6ag1206-2bb00-7ac2 firmwareversion to verify

Branch	Affected	Fixed in	Source
4.5	< 4.5	4.5	NVD

Siemens 6ag1206-2bs00-7ac2 firmwareversion to verify

Branch	Affected	Fixed in	Source
4.5	< 4.5	4.5	NVD

Siemens 6ag1208-0ba00-7ac2 firmwareversion to verify

Branch	Affected	Fixed in	Source
4.5	< 4.5	4.5	NVD

68 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

ICSA-24-228-01 CISA24 known affected
Siemens SCALANCE M-800, RUGGEDCOM RM1224
RUGGEDCOM RM1224 LTE(4G) EU (6GK6108-4AM00-2BA2) · RUGGEDCOM RM1224 LTE(4G) NAM (6GK6108-4AM00-2DA2) · SCALANCE M804PB (6GK5804-0AP00-2AA2) · +21 more
ICSA-24-074-08 CISA91 known affected
Siemens SCALANCE XB-200 / XC-200 / XP-200 / XF-200BA / XR-300WG Family
SCALANCE XB205-3 (SC, PN) (6GK5205-3BB00-2AB2) · SCALANCE XB205-3 (ST, E/IP) (6GK5205-3BB00-2TB2) · SCALANCE XB205-3 (ST, E/IP) (6GK5205-3BD00-2TB2) · +88 more
ICSA-24-046-09 CISA6 known affected
Siemens SCALANCE SC-600 Family
SCALANCE SC622-2C (6GK5622-2GS00-2AC2) · SCALANCE SC626-2C (6GK5626-2GS00-2AC2) · SCALANCE SC632-2C (6GK5632-2GS00-2AC2) · +3 more

Full record on NVD

Fix

Update Siemens 6ag1206-2bb00-7ac2 firmware to 4.5
Vendor fix CISA ICSA-24-228-01 · 24 productsUpdate to V8.1 or later version
Vendor fix CISA ICSA-24-074-08 · 91 productsUpdate to V4.6 or later version
Workaround from the vendor CISA ICSA-24-046-09 · 6 productsRestrict access to application webserver for trusted users only
No fix planned, says the vendor CISA ICSA-24-046-09 · 6 productsCurrently no fix is planned

Advisories and patches

cert-portal.siemens.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2024-01-06
OpenCVESSVC decisionnone—
CNACVSS 4.05.1read 2026-10-23
CNACVSS 3.12.7read 2026-10-23
NVDCVSS 3.16.5read 2026-10-23
CNAweakness (CWE)CWE-400read 2026-10-23
FIRST EPSSEPSS score1.0 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 4.0 vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published: 2023-11-14
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2023-44321?

Is CVE-2023-44321 actively exploited?

Active exploitation of CVE-2023-44321 has not been confirmed. Its EPSS score was 1.0% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-44321?

CVE-2023-44321 has a CVSS v3 base score of 6.5 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

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