How severe is CVE-2018-17057?

CVE-2018-17057 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-2018-17057 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 26% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-17057?

CVE-2018-17057 primarily affects Tecnick Tcpdf. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-17057?

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-2018-17057 published?

CVE-2018-17057 was published on 2018-09-14 and last updated on 2026-06-17.

CVE-2018-17057

CVE-2018-17057 is a critical-severity vulnerability in Tecnick Tcpdf with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 26% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 26% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Tecnick Tcpdf
Published: 2018-09-14
Last modified: 2026-06-17

Description

An issue was discovered in TCPDF before 6.2.22. Attackers can trigger deserialization of arbitrary data via the phar:// wrapper.

Frequently asked questions

What is CVE-2018-17057?: An issue was discovered in TCPDF before 6.2.22. Attackers can trigger deserialization of arbitrary data via the phar:// wrapper.
How severe is CVE-2018-17057?: CVE-2018-17057 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-2018-17057 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 26% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-17057?: CVE-2018-17057 primarily affects Tecnick Tcpdf. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-17057?: 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-2018-17057 published?: CVE-2018-17057 was published on 2018-09-14 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:tecnick:tcpdf:*:*:*:*:*:*:*:*
cpe:2.3:a:limesurvey:limesurvey:*:*:*:*:*:*:*:*

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