How severe is CVE-2013-4656?

CVE-2013-4656 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-2013-4656 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-4656?

CVE-2013-4656 primarily affects Asus Rt-ac66u 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-2013-4656?

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.

When was CVE-2013-4656 published?

CVE-2013-4656 was published on 2019-11-13 and last updated on 2026-06-16.

CVE-2013-4656

CVE-2013-4656 is a critical-severity vulnerability in Asus Rt-ac66u 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-22.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Asus Rt-ac66u Firmware
Published: 2019-11-13
Last modified: 2026-06-16

Description

Symlink Traversal vulnerability in ASUS RT-AC66U and RT-N56U due to misconfiguration in the SMB service.

Frequently asked questions

What is CVE-2013-4656?: Symlink Traversal vulnerability in ASUS RT-AC66U and RT-N56U due to misconfiguration in the SMB service.
How severe is CVE-2013-4656?: CVE-2013-4656 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-2013-4656 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-4656?: CVE-2013-4656 primarily affects Asus Rt-ac66u 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-2013-4656?: 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.
When was CVE-2013-4656 published?: CVE-2013-4656 was published on 2019-11-13 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:o:asus:rt-ac66u_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:asus:rt-n56u_firmware:-:*:*:*:*:*:*:*

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