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High severity7.5NVD Advisory· Published Mar 10, 2021· Updated Jun 17, 2026

CVE-2020-1919

CVE-2020-1919

Description

Incorrect bounds calculations in substr_compare could lead to an out-of-bounds read when the second string argument passed in is longer than the first. This issue affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, and versions 4.94.0, 4.95.0, 4.96.0, 4.97.0, 4.98.0.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

8
  • Facebook/Hhvm7 versions
    cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:*+ 6 more
    • cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:*range: <4.56.3
    • cpe:2.3:a:facebook:hhvm:4.94.0:*:*:*:*:*:*:*
    • cpe:2.3:a:facebook:hhvm:4.95.0:*:*:*:*:*:*:*
    • cpe:2.3:a:facebook:hhvm:4.96.0:*:*:*:*:*:*:*
    • cpe:2.3:a:facebook:hhvm:4.97.0:*:*:*:*:*:*:*
    • cpe:2.3:a:facebook:hhvm:4.98.0:*:*:*:*:*:*:*
    • (no CPE)range: 4.98.0
  • HHVM/HHVMllm-fuzzy
    Range: <4.56.3, 4.57.0-4.80.1, 4.81.0-4.93.1, 4.94.0, 4.95.0, 4.96.0, 4.97.0, 4.98.0

Patches

Vulnerability mechanics

References

2

News mentions

0

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