How severe is CVE-2025-13406?

CVE-2025-13406 has a CVSS 4.0 base score of 6.8, rated medium severity.

Is CVE-2025-13406 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-13406?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-13406 have an EU (EUVD) identifier?

Yes. CVE-2025-13406 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208781.

When was CVE-2025-13406 published?

CVE-2025-13406 was published on 2026-03-17 and last updated on 2026-06-17.

CVE-2025-13406

CVE-2025-13406 is a medium-severity vulnerability with a CVSS 4.0 base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

Severity: Medium (CVSS 4.0 base score 6.8)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-208781
Weakness: CWE-476
Published: 2026-03-17
Last modified: 2026-06-17

Description

NULL Pointer Dereference vulnerability in Softing Industrial Automation GmbH smartLink SW-HT (Webserver modules) allows HTTP DoS.This issue affects smartLink SW-HT: 1.43.

Frequently asked questions

What is CVE-2025-13406?: NULL Pointer Dereference vulnerability in Softing Industrial Automation GmbH smartLink SW-HT (Webserver modules) allows HTTP DoS.This issue affects smartLink SW-HT: 1.43.
How severe is CVE-2025-13406?: CVE-2025-13406 has a CVSS 4.0 base score of 6.8, rated medium severity.
Is CVE-2025-13406 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-13406?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-13406 have an EU (EUVD) identifier?: Yes. CVE-2025-13406 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208781.
When was CVE-2025-13406 published?: CVE-2025-13406 was published on 2026-03-17 and last updated on 2026-06-17.

References

Other CWE-476 (NULL Pointer Dereference) vulnerabilities

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CVE-2020-14500 — Critical (CVSS 10.0): Secomea GateManager all versions prior to 9.2c, An attacker can send a negative value and overwrite arbitrary data.
CVE-2010-2495 — Critical (CVSS 10.0): The pppol2tp_xmit function in drivers/net/pppol2tp.c in the L2TP implementation in the Linux kernel before 2.6.34 does…
CVE-2026-46195 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: smb: client: validate dacloffset before building…
CVE-2026-31657 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: batman-adv: hold claim backbone gateways by…
CVE-2026-31436 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: fix possible wrong descriptor…

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