How severe is CVE-2012-10021?

CVE-2012-10021 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2012-10021 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-10021?

CVE-2012-10021 affects Dlink Dir-605l Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2012-10021?

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

Does CVE-2012-10021 have an EU (EUVD) identifier?

Yes. CVE-2012-10021 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2012-6567.

When was CVE-2012-10021 published?

CVE-2012-10021 was published on 2025-07-31 and last updated on 2026-06-16.

CVE-2012-10021

CVE-2012-10021 is a critical-severity vulnerability in Dlink Dir-605l Firmware with a CVSS 3.x base score of 9.8. 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-121.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.3
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2012-6567
Weakness: CWE-121
Affected product: Dlink Dir-605l Firmware
Published: 2025-07-31
Last modified: 2026-06-16

Description

A stack-based buffer overflow vulnerability exists in D-Link DIR-605L Wireless N300 Cloud Router firmware versions 1.12 and 1.13 via the getAuthCode() function. The flaw arises from unsafe usage of sprintf() when processing user-supplied CAPTCHA data via the FILECODE parameter in /goform/formLogin. A remote unauthenticated attacker can exploit this to execute arbitrary code with root privileges on the device.

Frequently asked questions

What is CVE-2012-10021?: A stack-based buffer overflow vulnerability exists in D-Link DIR-605L Wireless N300 Cloud Router firmware versions 1.12 and 1.13 via the getAuthCode() function. The flaw arises from unsafe usage of sprintf() when processing user-supplied CAPTCHA data via the FILECODE parameter in /goform/formLogin. A remote unauthenticated attacker can exploit this to execute arbitrary code with root privileges on the device.
How severe is CVE-2012-10021?: CVE-2012-10021 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2012-10021 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-10021?: CVE-2012-10021 affects Dlink Dir-605l Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2012-10021?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2012-10021 have an EU (EUVD) identifier?: Yes. CVE-2012-10021 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2012-6567.
When was CVE-2012-10021 published?: CVE-2012-10021 was published on 2025-07-31 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:dlink:dir-605l_firmware:*:*:*:*:*:*:*:*

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