How severe is CVE-2023-28703?

CVE-2023-28703 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-28703 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-28703?

CVE-2023-28703 affects Asus Rt-ac86u Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-28703?

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.

When was CVE-2023-28703 published?

CVE-2023-28703 was published on 2023-06-02 and last updated on 2026-06-17.

CVE-2023-28703

CVE-2023-28703 is a high-severity vulnerability in Asus Rt-ac86u Firmware with a CVSS 3.x base score of 7.2. 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: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-121
Affected product: Asus Rt-ac86u Firmware
Published: 2023-06-02
Last modified: 2026-06-17

Description

ASUS RT-AC86U’s specific cgi function has a stack-based buffer overflow vulnerability due to insufficient validation for network packet header length. A remote attacker with administrator privileges can exploit this vulnerability to execute arbitrary system commands, disrupt system or terminate service.

Frequently asked questions

What is CVE-2023-28703?: ASUS RT-AC86U’s specific cgi function has a stack-based buffer overflow vulnerability due to insufficient validation for network packet header length. A remote attacker with administrator privileges can exploit this vulnerability to execute arbitrary system commands, disrupt system or terminate service.
How severe is CVE-2023-28703?: CVE-2023-28703 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-28703 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-28703?: CVE-2023-28703 affects Asus Rt-ac86u Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-28703?: 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.
When was CVE-2023-28703 published?: CVE-2023-28703 was published on 2023-06-02 and last updated on 2026-06-17.

References

https://www.twcert.org.tw/tw/cp-132-7147-afcf9-1.html

Affected products (1)

cpe:2.3:o:asus:rt-ac86u_firmware:3.0.0.4.386.51255:*:*:*:*:*:*:*

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