How severe is CVE-2022-32548?

CVE-2022-32548 has a CVSS 3.x base score of 10.0, 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-2022-32548 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 34% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-32548?

CVE-2022-32548 primarily affects Draytek Vigor3910 Firmware. In total, 68 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-32548?

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-2022-32548 published?

CVE-2022-32548 was published on 2022-08-29 and last updated on 2026-06-17.

CVE-2022-32548

CVE-2022-32548 is a critical-severity vulnerability in Draytek Vigor3910 Firmware with a CVSS 3.x base score of 10.0. Its EPSS exploit-prediction score of 34% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-120.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
EPSS exploit prediction: 34% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Draytek Vigor3910 Firmware
Published: 2022-08-29
Last modified: 2026-06-17

Description

An issue was discovered on certain DrayTek Vigor routers before July 2022 such as the Vigor3910 before 4.3.1.1. /cgi-bin/wlogin.cgi has a buffer overflow via the username or password to the aa or ab field.

Frequently asked questions

What is CVE-2022-32548?: An issue was discovered on certain DrayTek Vigor routers before July 2022 such as the Vigor3910 before 4.3.1.1. /cgi-bin/wlogin.cgi has a buffer overflow via the username or password to the aa or ab field.
How severe is CVE-2022-32548?: CVE-2022-32548 has a CVSS 3.x base score of 10.0, 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-2022-32548 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 34% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-32548?: CVE-2022-32548 primarily affects Draytek Vigor3910 Firmware. In total, 68 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-32548?: 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-2022-32548 published?: CVE-2022-32548 was published on 2022-08-29 and last updated on 2026-06-17.

References

Affected products (68)

cpe:2.3:o:draytek:vigor3910_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor1000b_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2962_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2962p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2927_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2927ax_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2927ac_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2927vac_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2927l_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2927lac_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2915_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2915ac_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2952_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2952p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor3220_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2926_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2926n_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2926ac_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2926vac_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2926l_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2926ln_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2926lac_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2862_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2862n_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2862ac_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2862vac_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2862b_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2862bn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2862l_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2862ln_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2862lac_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2620l_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2620ln_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigorlte_200n_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2133_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2133n_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2133ac_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2133vac_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2133fvac_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2762_firmware:*:*:*:*:*:*:*:*

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