How severe is CVE-2018-8464?

CVE-2018-8464 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-8464 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 43% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-8464?

CVE-2018-8464 affects Microsoft Edge. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-8464?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-8464 published?

CVE-2018-8464 was published on 2018-09-13 and last updated on 2026-06-17.

CVE-2018-8464

CVE-2018-8464 is a high-severity vulnerability in Microsoft Edge with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 43% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 9.3
EPSS exploit prediction: 43% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Microsoft Edge
Published: 2018-09-13
Last modified: 2026-06-17

Description

An remote code execution vulnerability exists when Microsoft Edge PDF Reader improperly handles objects in memory, aka "Microsoft Edge PDF Remote Code Execution Vulnerability." This affects Microsoft Edge.

Frequently asked questions

What is CVE-2018-8464?: An remote code execution vulnerability exists when Microsoft Edge PDF Reader improperly handles objects in memory, aka "Microsoft Edge PDF Remote Code Execution Vulnerability." This affects Microsoft Edge.
How severe is CVE-2018-8464?: CVE-2018-8464 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-8464 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 43% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-8464?: CVE-2018-8464 affects Microsoft Edge. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-8464?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-8464 published?: CVE-2018-8464 was published on 2018-09-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:microsoft:edge:-:*:*:*:*:*:*:*

More vulnerabilities in Microsoft Edge

CVE-2017-0028 — Critical (CVSS 9.8): A remote code execution vulnerability exists when Microsoft scripting engine improperly accesses objects in memory. The…
CVE-2017-0252 — Critical (CVSS 9.8): A remote code execution vulnerability exists in Microsoft Chakra Core in the way JavaScript engines render when…
CVE-2017-0223 — Critical (CVSS 9.8): A remote code execution vulnerability exists in Microsoft Chakra Core in the way JavaScript engines render when…
CVE-2015-0313 — Critical (CVSS 9.8): Use-after-free vulnerability in Adobe Flash Player before 13.0.0.269 and 14.x through 16.x before 16.0.0.305 on Windows…
CVE-2015-0311 — Critical (CVSS 9.8): Unspecified vulnerability in Adobe Flash Player through 13.0.0.262 and 14.x, 15.x, and 16.x through 16.0.0.287 on…
CVE-2024-7971 — Critical (CVSS 9.6): Type confusion in V8 in Google Chrome prior to 128.0.6613.84 allowed a remote attacker to exploit heap corruption via a…

All CVEs affecting Microsoft Edge →

Other CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities

CVE-2026-2778 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in…
CVE-2026-2776 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability…
CVE-2025-1866 — Critical (CVSS 10.0): Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in warmcat libwebsockets allows…
CVE-2022-27625 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
CVE-2022-27624 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
CVE-2020-11896 — Critical (CVSS 10.0): The Treck TCP/IP stack before 6.0.1.66 allows Remote Code Execution, related to IPv4 tunneling.

Browse all CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities →