CVE-2026-17544 (GCVE-0-2026-17544)

Vulnerability from cvelistv5 – Published: 2026-07-30 11:22 – Updated: 2026-07-31 03:55
VLAI
Title
Out-of-bounds write in bccomp() via crafted operand and scale
Summary
Attacker-provided inputs to bccomp() could lead to an out-of-bounds write with stack and heap corruption in PHP versions from 8.4.* before 8.4.24 and from 8.5.* before 8.5.9.
Severity
8.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/AU:N
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-30 00:00 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
PHP Group PHP Affected: 8.4.* , < 8.4.24 (semver)
Affected: 8.5.* , < 8.5.9 (semver)
guessed Create a notification for this product.
Credits
Recep Asan Ilija Tovilo - The PHP Foundation Saki Takamachi - The PHP Foundation
Show details on NVD website
To clipboard 

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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

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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.


Detection rules are retrieved from Rulezet.