How severe is CVE-2021-45887?

CVE-2021-45887 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-2021-45887 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-45887?

CVE-2021-45887 primarily affects Ponton X/p Messenger. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-45887?

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-2021-45887 published?

CVE-2021-45887 was published on 2022-03-13 and last updated on 2026-06-17.

CVE-2021-45887

CVE-2021-45887 is a critical-severity vulnerability in Ponton X/p Messenger 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: 7.5
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Ponton X/p Messenger
Published: 2022-03-13
Last modified: 2026-06-17

Description

An issue was discovered in PONTON X/P Messenger before 3.11.2. Due to path traversal in private/SchemaSetUpload.do for uploaded ZIP files, an executable script can be uploaded by web application administrators, giving the attacker remote code execution on the underlying server via an imgs/*.jsp URI.

Frequently asked questions

What is CVE-2021-45887?: An issue was discovered in PONTON X/P Messenger before 3.11.2. Due to path traversal in private/SchemaSetUpload.do for uploaded ZIP files, an executable script can be uploaded by web application administrators, giving the attacker remote code execution on the underlying server via an imgs/*.jsp URI.
How severe is CVE-2021-45887?: CVE-2021-45887 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-2021-45887 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-45887?: CVE-2021-45887 primarily affects Ponton X/p Messenger. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-45887?: 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-2021-45887 published?: CVE-2021-45887 was published on 2022-03-13 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:ponton:x\/p_messenger:3.8.0:*:*:*:*:*:*:*
cpe:2.3:a:ponton:x\/p_messenger:3.10.0:*:*:*:*:*:*:*

More vulnerabilities in Ponton X/p Messenger

CVE-2021-45886 — High (CVSS 8.8): An issue was discovered in PONTON X/P Messenger before 3.11.2. Anti-CSRF tokens are globally valid, making the web…
CVE-2021-45889 — Medium (CVSS 5.4): An issue was discovered in PONTON X/P Messenger before 3.11.2. Several functions are vulnerable to reflected XSS, as…
CVE-2021-45888 — Medium (CVSS 4.8): An issue was discovered in PONTON X/P Messenger before 3.11.2. The navigation tree that is shown on the left side of…

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