CVE-2026-14355
It was discovered that a buffer overflow in the implementation of AES Key Wrap with Padding in the openssl extension of PHP, a widely-used open source general purpose scripting language, could result in memory corruption. https://security-tracker.debian.org/tracker/DSA-6377-1
CSIRTS triage
- What
- A buffer overflow in the OpenSSL extension could result in memory corruption.
- Who is affected
- Deployments of PHP 8.4.
- Urgency
- Remediation is urgent due to the potential for memory corruption vulnerabilities.
- Action
- Update to the latest version of PHP.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.31% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 22% of all EPSS-scored CVEs.
Advisory coverage (5)
- unknownMultiple vulnerabilities in PHP (July 7, 2026)cert-fr-avis · 2026-07-07
- medium[NEW] [medium] PHP: Multiple vulnerabilities allow denial of servicecert-bund · 2026-07-06
- unknownDSA-6377-1 php8.4 - security updatedebian · 2026-07-04
- mediumCVE-2026-14355: In PHP versions 8.2.* before 8.2.32, 8.3.* before 8.3.32, 8.4.* before 8.4.23, 8.5.* before 8.…nvd · 2026-07-03
- mediumCVE-2026-14355: ext/openssl: Memory corruption in openssl_encrypt with AES-WRAP-PADmsrc · 2026-07-02
External references
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[](https://www.csirts.com/cve/CVE-2026-14355)