CVE-2016-4540 (GCVE-0-2016-4540)
Vulnerability from cvelistv5 – Published: 2016-05-22 01:00 – Updated: 2024-08-06 00:32
VLAI
EPSS
VEX
Summary
The grapheme_stripos function in ext/intl/grapheme/grapheme_string.c in PHP before 5.5.35, 5.6.x before 5.6.21, and 7.x before 7.0.6 allows remote attackers to cause a denial of service (out-of-bounds read) or possibly have unspecified other impact via a negative offset.
Severity
9.8 (Critical)
CWE
- n/a
Assigner
References
15 references
Date Public
2016-04-26 00:00
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href=\\\"http://cwe.mitre.org/data/definitions/125.html\\\"\u003eCWE-125: Out-of-bounds Read\u003c/a\u003e\"}}",
"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2026-06-28T11:01:54+00:00",
"cve": "CVE-2016-4540",
"id": "CVE-2016-4540",
"initial_release_date": "2016-04-20T00:00:00+00:00",
"product_status:fixed": "251",
"product_status:known_affected": "109",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "php: OOB read in grapheme_stripos and grapheme_strpos when negative offset is used",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2016/cve-2016-4540.json",
"version": "3"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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