How severe is CVE-2021-32428?

CVE-2021-32428 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-2021-32428 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-32428?

CVE-2021-32428 affects Viaviweb Ebook. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-32428?

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-2021-32428 published?

CVE-2021-32428 was published on 2022-07-01 and last updated on 2026-06-17.

CVE-2021-32428

CVE-2021-32428 is a critical-severity vulnerability in Viaviweb Ebook 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-89.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Viaviweb Ebook
Published: 2022-07-01
Last modified: 2026-06-17

Description

SQL Injection vulnerability in viaviwebtech Android EBook App (Books App, PDF, ePub, Online Book Reading, Download Books) 10 via the author_id parameter to api.php.

Frequently asked questions

What is CVE-2021-32428?: SQL Injection vulnerability in viaviwebtech Android EBook App (Books App, PDF, ePub, Online Book Reading, Download Books) 10 via the author_id parameter to api.php.
How severe is CVE-2021-32428?: CVE-2021-32428 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-2021-32428 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-32428?: CVE-2021-32428 affects Viaviweb Ebook. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-32428?: 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-2021-32428 published?: CVE-2021-32428 was published on 2022-07-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:viaviweb:ebook:10:*:*:*:*:android:*:*

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