How severe is CVE-2018-4917?

CVE-2018-4917 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-2018-4917 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-4917?

CVE-2018-4917 primarily affects Adobe Acrobat 2017. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-4917?

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-2018-4917 published?

CVE-2018-4917 was published on 2018-05-19 and last updated on 2026-06-17.

CVE-2018-4917

CVE-2018-4917 is a critical-severity vulnerability in Adobe Acrobat 2017 with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 18% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-787.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 18% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Adobe Acrobat 2017
Published: 2018-05-19
Last modified: 2026-06-17

Description

Adobe Acrobat and Reader versions 2018.009.20050 and earlier, 2017.011.30070 and earlier, 2015.006.30394 and earlier have an exploitable heap overflow vulnerability. Successful exploitation could lead to arbitrary code execution in the context of the current user.

Frequently asked questions

What is CVE-2018-4917?: Adobe Acrobat and Reader versions 2018.009.20050 and earlier, 2017.011.30070 and earlier, 2015.006.30394 and earlier have an exploitable heap overflow vulnerability. Successful exploitation could lead to arbitrary code execution in the context of the current user.
How severe is CVE-2018-4917?: CVE-2018-4917 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-2018-4917 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-4917?: CVE-2018-4917 primarily affects Adobe Acrobat 2017. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-4917?: 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-2018-4917 published?: CVE-2018-4917 was published on 2018-05-19 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:adobe:acrobat_2017:*:*:*:*:*:*:*:*
cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:classic:*:*:*
cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*
cpe:2.3:a:adobe:acrobat_reader_2017:*:*:*:*:*:*:*:*
cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:classic:*:*:*
cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*

More vulnerabilities in Adobe Acrobat 2017

CVE-2021-39863 — High (CVSS 7.8): Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier)…
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