How severe is CVE-2021-29377?

CVE-2021-29377 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-2021-29377 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-29377?

CVE-2021-29377 affects Pearadmin Pearadmin Think. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-29377?

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-2021-29377 published?

CVE-2021-29377 was published on 2021-08-12 and last updated on 2026-06-17.

CVE-2021-29377

CVE-2021-29377 is a critical-severity vulnerability in Pearadmin Pearadmin Think 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-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Pearadmin Pearadmin Think
Published: 2021-08-12
Last modified: 2026-06-17

Description

Pear Admin Think through 2.1.2 has an arbitrary file upload vulnerability that allows attackers to execute arbitrary code remotely. A .php file can be uploaded via admin.php/index/upload because app/common/service/UploadService.php mishandles fileExt.

Frequently asked questions

What is CVE-2021-29377?: Pear Admin Think through 2.1.2 has an arbitrary file upload vulnerability that allows attackers to execute arbitrary code remotely. A .php file can be uploaded via admin.php/index/upload because app/common/service/UploadService.php mishandles fileExt.
How severe is CVE-2021-29377?: CVE-2021-29377 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-2021-29377 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-29377?: CVE-2021-29377 affects Pearadmin Pearadmin Think. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-29377?: 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-2021-29377 published?: CVE-2021-29377 was published on 2021-08-12 and last updated on 2026-06-17.

References

https://gitee.com/pear-admin/Pear-Admin-Think/issues/I3DI3T

Affected products (1)

cpe:2.3:a:pearadmin:pearadmin_think:*:*:*:*:*:*:*:*

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