How severe is CVE-2011-4821?

CVE-2011-4821 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2011-4821 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-4821?

CVE-2011-4821 primarily affects Dlink Dir-601 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-4821?

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

When was CVE-2011-4821 published?

CVE-2011-4821 was published on 2014-06-20 and last updated on 2026-06-16.

CVE-2011-4821

CVE-2011-4821 is a medium-severity vulnerability in Dlink Dir-601 Firmware with a CVSS 2.0 base score of 5.0. 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-22.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Dlink Dir-601 Firmware
Published: 2014-06-20
Last modified: 2026-06-16

Description

Directory traversal vulnerability in the TFTP server in D-Link DIR-601 Wireless N150 Home Router with firmware 1.02NA allows remote attackers to read arbitrary files via unspecified vectors.

Frequently asked questions

What is CVE-2011-4821?: Directory traversal vulnerability in the TFTP server in D-Link DIR-601 Wireless N150 Home Router with firmware 1.02NA allows remote attackers to read arbitrary files via unspecified vectors.
How severe is CVE-2011-4821?: CVE-2011-4821 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2011-4821 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-4821?: CVE-2011-4821 primarily affects Dlink Dir-601 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-4821?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-4821 published?: CVE-2011-4821 was published on 2014-06-20 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:o:dlink:dir-601_firmware:1.02na:*:*:*:*:*:*:*
cpe:2.3:h:dlink:dir-601:-:*:*:*:*:*:*:*

More vulnerabilities in Dlink Dir-601 Firmware

CVE-2019-16327 — Critical (CVSS 9.8): D-Link DIR-601 B1 2.00NA devices are vulnerable to authentication bypass. They do not check for authentication at the…
CVE-2019-16326 — High (CVSS 8.8): D-Link DIR-601 B1 2.00NA devices have CSRF because no anti-CSRF token is implemented. A remote attacker could exploit…
CVE-2018-10641 — High (CVSS 8.1): D-Link DIR-601 A1 1.02NA devices do not require the old password for a password change, which occurs in cleartext.
CVE-2018-12710 — High (CVSS 8.0): An issue was discovered on D-Link DIR-601 2.02NA devices. Being local to the network and having only "User" account…
CVE-2018-5708 — High (CVSS 8.0): An issue was discovered on D-Link DIR-601 B1 2.02NA devices. Being on the same local network as, but being…

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