How severe is CVE-2025-8159?

CVE-2025-8159 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-8159 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-8159?

CVE-2025-8159 affects Dlink Dir-513 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-8159?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-8159 have an EU (EUVD) identifier?

Yes. CVE-2025-8159 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22707.

When was CVE-2025-8159 published?

CVE-2025-8159 was published on 2025-07-25 and last updated on 2026-06-17.

CVE-2025-8159

CVE-2025-8159 is a high-severity vulnerability in Dlink Dir-513 Firmware with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 14% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-787.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
CVSS v4: 7.4
EPSS exploit prediction: 14% (96th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-22707
Weakness: CWE-787
Affected product: Dlink Dir-513 Firmware
Published: 2025-07-25
Last modified: 2026-06-17

Description

A vulnerability was found in D-Link DIR-513 1.0. It has been rated as critical. This issue affects the function formLanguageChange of the file /goform/formLanguageChange of the component HTTP POST Request Handler. The manipulation of the argument curTime leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

Frequently asked questions

What is CVE-2025-8159?: A vulnerability was found in D-Link DIR-513 1.0. It has been rated as critical. This issue affects the function formLanguageChange of the file /goform/formLanguageChange of the component HTTP POST Request Handler. The manipulation of the argument curTime leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.
How severe is CVE-2025-8159?: CVE-2025-8159 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-8159 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-8159?: CVE-2025-8159 affects Dlink Dir-513 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-8159?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-8159 have an EU (EUVD) identifier?: Yes. CVE-2025-8159 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22707.
When was CVE-2025-8159 published?: CVE-2025-8159 was published on 2025-07-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:dlink:dir-513_firmware:1.0:*:*:*:*:*:*:*

More vulnerabilities in Dlink Dir-513 Firmware

CVE-2025-70245 — Critical (CVSS 9.8): Stack buffer overflow vulnerability in D-Link DIR-513 v1.10 via the curTime parameter to goform/formSetWizardSelectMode.
CVE-2025-70233 — Critical (CVSS 9.8): Stack buffer overflow vulnerability in D-Link DIR-513 v1.10 via the curTime parameter to goform/formSetEnableWizard.
CVE-2025-70232 — Critical (CVSS 9.8): Stack buffer overflow vulnerability in D-Link DIR-513 v1.10 via the curTime parameter to goform/formSetMACFilter.
CVE-2025-70231 — Critical (CVSS 9.8): D-Link DIR-513 version 1.10 contains a critical-level vulnerability. When processing POST requests related to…
CVE-2025-70230 — Critical (CVSS 9.8): Stack buffer overflow vulnerability in D-Link DIR-513 v1.10 via the curTime parameter to goform/formSetDDNS.
CVE-2025-70229 — Critical (CVSS 9.8): Stack buffer overflow vulnerability in D-Link DIR-513 v1.10 via the curTime parameter to goform/formSchedule.

All CVEs affecting Dlink Dir-513 Firmware →

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