HHVM
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- Software runtime
- Total vulnerabilities (90 days)
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As of 11/12/2026, HHVM recorded 1 security vulnerability in the last 90 days, of which 0 are rated High or Critical. None of these vulnerabilities is actively exploited (KEV) according to CISA's catalog. CyStack recommends that organizations and individual users apply patches as soon as possible.
CyStack does not yet have sufficient official-source data to identify the latest version of HHVM and determine which vulnerabilities affect that version.
CyStack VulnScan continuously discovers assets, validates vulnerabilities, and helps security teams prioritize remediation across the organization.
CVE-2026-119723CVE-2026-119723CVE-2022-36937Facebook HHVM permits deprecated TLS in stream connectionsCVE-2019-3556CVE-2019-3556CVE-2021-24036IOBuf Integer Overflow Causes Heap Out-of-Bounds Write in Facebook folly and HHVMCVE-2020-1900CVE-2020-1900| Vulnerability | Exploitation status | Fix | Published | Severity |
|---|---|---|---|---|
CVE-2026-119723CVE-2026-119723 | Exploitation statusNot confirmed | FixYes | Published11/11/2026 |
| SeverityUnknown |
CVE-2022-36937Facebook HHVM permits deprecated TLS in stream connections | Exploitation statusNot exploited | FixYes | Published05/10/2023 | SeverityCritical |
|---|
CVE-2019-3556CVE-2019-3556 | Exploitation statusNot confirmed | FixYes | Published10/26/2021 | SeverityUnknown |
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CVE-2021-24036IOBuf Integer Overflow Causes Heap Out-of-Bounds Write in Facebook folly and HHVM | Exploitation statusNot confirmed | FixYes | Published07/23/2021 | SeverityCritical |
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CVE-2020-1900CVE-2020-1900 | Exploitation statusNot confirmed | FixYes | Published03/11/2021 | SeverityUnknown |
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CVE-2020-1899CVE-2020-1899 | Exploitation statusNot confirmed | FixYes | Published03/11/2021 | SeverityUnknown |
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CVE-2020-1898CVE-2020-1898 | Exploitation statusNot confirmed | FixYes | Published03/11/2021 | SeverityUnknown |
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CVE-2021-24025CVE-2021-24025 | Exploitation statusNot confirmed | FixYes | Published03/10/2021 | SeverityUnknown |
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CVE-2020-1921CVE-2020-1921 | Exploitation statusNot confirmed | FixYes | Published03/10/2021 | SeverityUnknown |
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CVE-2020-1919CVE-2020-1919 | Exploitation statusNot confirmed | FixYes | Published03/10/2021 | SeverityUnknown |
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CVE-2020-1918CVE-2020-1918 | Exploitation statusNot confirmed | FixYes | Published03/10/2021 | SeverityUnknown |
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CVE-2020-1917CVE-2020-1917 | Exploitation statusNot confirmed | FixYes | Published03/10/2021 | SeverityUnknown |
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CVE-2020-1916CVE-2020-1916 | Exploitation statusNot confirmed | FixYes | Published03/10/2021 | SeverityUnknown |
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CVE-2020-1893CVE-2020-1893 | Exploitation statusNot confirmed | FixNo | Published03/03/2020 | SeverityUnknown |
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CVE-2020-1892CVE-2020-1892 | Exploitation statusNot confirmed | FixNo | Published03/03/2020 | SeverityUnknown |
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CVE-2020-1888CVE-2020-1888 | Exploitation statusNot confirmed | FixNo | Published03/03/2020 | SeverityUnknown |
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CVE-2019-11936CVE-2019-11936 | Exploitation statusNot confirmed | FixYes | Published12/04/2019 | SeverityUnknown |
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CVE-2019-11935CVE-2019-11935 | Exploitation statusNot confirmed | FixYes | Published12/04/2019 | SeverityUnknown |
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CVE-2019-11930CVE-2019-11930 | Exploitation statusNot confirmed | FixYes | Published12/04/2019 | SeverityUnknown |
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CVE-2019-11929CVE-2019-11929 | Exploitation statusNot confirmed | FixNo | Published10/02/2019 | SeverityUnknown |
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CVE-2019-11926CVE-2019-11926 | Exploitation statusNot confirmed | FixNo | Published09/06/2019 | SeverityUnknown |
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CVE-2019-11925CVE-2019-11925 | Exploitation statusNot confirmed | FixNo | Published09/06/2019 | SeverityUnknown |
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CVE-2019-3570CVE-2019-3570 | Exploitation statusNot confirmed | FixNo | Published07/18/2019 | SeverityUnknown |
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CVE-2019-3569CVE-2019-3569 | Exploitation statusNot confirmed | FixNo | Published06/26/2019 | SeverityUnknown |
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CVE-2019-3561CVE-2019-3561 | Exploitation statusNot confirmed | FixYes | Published04/29/2019 | SeverityUnknown |
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CVE-2019-3557CVE-2019-3557 | Exploitation statusNot confirmed | FixYes | Published01/15/2019 | SeverityUnknown |
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CVE-2018-6345CVE-2018-6345 | Exploitation statusNot confirmed | FixYes | Published01/15/2019 | SeverityUnknown |
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CVE-2018-6340CVE-2018-6340 | Exploitation statusNot exploited | FixYes | Published12/31/2018 | SeverityHigh |
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CVE-2018-6337CVE-2018-6337 | Exploitation statusNot exploited | FixNo | Published12/31/2018 | SeverityHigh |
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CVE-2018-6335CVE-2018-6335 | Exploitation statusNot exploited | FixYes | Published12/31/2018 | SeverityHigh |
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CVE-2018-6334CVE-2018-6334 | Exploitation statusNot exploited | FixYes | Published12/31/2018 | SeverityCritical |
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CVE-2018-6332CVE-2018-6332 | Exploitation statusNot exploited | FixYes | Published12/03/2018 | SeverityMedium |
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32 Results | Page 1 of 1