CVE Details
CVE-2026-109618
PHP Memory Corruption Vulnerability
Published: 2026-10-26
CVSS: 9.2 CRITICAL
Product: PHP Group PHP
Due Date: 2026-10-29
PHP contains an out-of-memory corruption vulnerability that allows for unauthenticated remote code execution.
GitHub PoC
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or contain malware. Use caution and review code before running anything.
FIRST EPSS
EPSS estimates the probability of exploitation in the next 30 days. Higher values indicate higher likelihood of real-world exploitation.
Timeline
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GitHub
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References
Show Raw Data
| Key | Remaining Key | Value |
|---|---|---|
| dataType | CVE_RECORD | |
| dataVersion | 5.2 | |
| cveMetadata > | cveId | CVE-2026-109618 |
| cveMetadata > | assignerOrgId | dd77f84a-d19a-4638-8c3d-a322d820ed2b |
| cveMetadata > | state | PUBLISHED |
| cveMetadata > | assignerShortName | php |
| cveMetadata > | dateReserved | 2026-10-12T21:03:58.117Z |
| cveMetadata > | datePublished | 2026-10-21T13:48:34.845Z |
| cveMetadata > | dateUpdated | 2026-10-23T14:07:55.926Z |
| containers > | cna > providerMetadata > orgId | dd77f84a-d19a-4638-8c3d-a322d820ed2b |
| containers > | cna > providerMetadata > shortName | php |
| containers > | cna > providerMetadata > dateUpdated | 2026-10-21T13:48:34.845Z |
| containers > | cna > title | RCE via OOM corruption |
| containers > | cna > problemTypes > 0 > descriptions > 0 > lang | en |
| containers > | cna > problemTypes > 0 > descriptions > 0 > cweId | CWE-416 |
| containers > | cna > problemTypes > 0 > descriptions > 0 > description | CWE-416 Use after free |
| containers > | cna > problemTypes > 0 > descriptions > 0 > type | CWE |
| containers > | cna > problemTypes > 1 > descriptions > 0 > lang | en |
| containers > | cna > problemTypes > 1 > descriptions > 0 > cweId | CWE-755 |
| containers > | cna > problemTypes > 1 > descriptions > 0 > description | CWE-755 Improper Handling of Exceptional Conditions |
| containers > | cna > problemTypes > 1 > descriptions > 0 > type | CWE |
| containers > | cna > problemTypes > 2 > descriptions > 0 > lang | en |
| containers > | cna > problemTypes > 2 > descriptions > 0 > cweId | CWE-824 |
| containers > | cna > problemTypes > 2 > descriptions > 0 > description | CWE-824 Access of uninitialized pointer |
| containers > | cna > problemTypes > 2 > descriptions > 0 > type | CWE |
| containers > | cna > problemTypes > 3 > descriptions > 0 > lang | en |
| containers > | cna > problemTypes > 3 > descriptions > 0 > cweId | CWE-1325 |
| containers > | cna > problemTypes > 3 > descriptions > 0 > description | CWE-1325 Improperly controlled sequential memory allocation |
| containers > | cna > problemTypes > 3 > descriptions > 0 > type | CWE |
| containers > | cna > problemTypes > 4 > descriptions > 0 > lang | en |
| containers > | cna > problemTypes > 4 > descriptions > 0 > cweId | CWE-1419 |
| containers > | cna > problemTypes > 4 > descriptions > 0 > description | CWE-1419 Incorrect Initialization of Resource |
| containers > | cna > problemTypes > 4 > descriptions > 0 > type | CWE |
| containers > | cna > impacts > 0 > capecId | CAPEC-234 |
| containers > | cna > impacts > 0 > descriptions > 0 > lang | en |
| containers > | cna > impacts > 0 > descriptions > 0 > value | CAPEC-234 Hijacking a privileged process |
| containers > | cna > affected > 0 > vendor | PHP Group |
| containers > | cna > affected > 0 > product | PHP |
| containers > | cna > affected > 0 > packageName | php-src |
| containers > | cna > affected > 0 > versions > 0 > status | affected |
| containers > | cna > affected > 0 > versions > 0 > version | 8.2.* |
| containers > | cna > affected > 0 > versions > 0 > lessThan | 8.2.35 |
| containers > | cna > affected > 0 > versions > 0 > versionType | semver |
| containers > | cna > affected > 0 > versions > 1 > status | affected |
| containers > | cna > affected > 0 > versions > 1 > version | 8.3.* |
| containers > | cna > affected > 0 > versions > 1 > lessThan | 8.3.36 |
| containers > | cna > affected > 0 > versions > 1 > versionType | semver |
| containers > | cna > affected > 0 > versions > 2 > status | affected |
| containers > | cna > affected > 0 > versions > 2 > version | 8.4.* |
| containers > | cna > affected > 0 > versions > 2 > lessThan | 8.4.27 |
| containers > | cna > affected > 0 > versions > 2 > versionType | semver |
| containers > | cna > affected > 0 > versions > 3 > status | affected |
| containers > | cna > affected > 0 > versions > 3 > version | 8.5.* |
| containers > | cna > affected > 0 > versions > 3 > lessThan | 8.5.12 |
| containers > | cna > affected > 0 > versions > 3 > versionType | semver |
| containers > | cna > affected > 0 > defaultStatus | unaffected |
| containers > | cna > descriptions > 0 > lang | en |
| containers > | cna > descriptions > 0 > value | PHP uses longjmp() for out-of-memory (OOM) errors to exit the current context and abort handling of the request. Some contexts may not properly account for this scenario and leave request memory in an uninitialized state before performing an allocation. The subsequent request cleanup procedure may read or branch on this memory. Multiple OOM strategies can consistently trigger this condition and lead to remote code execution (RCE). |
| containers > | cna > descriptions > 0 > supportingMedia > 0 > type | text/html |
| containers > | cna > descriptions > 0 > supportingMedia > 0 > base64 | False |
| containers > | cna > descriptions > 0 > supportingMedia > 0 > value | PHP uses longjmp() for out-of-memory (OOM) errors to exit the current context and abort handling of the request. Some contexts may not properly account for this scenario and leave request memory in an uninitialized state before performing an allocation. The subsequent request cleanup procedure may read or branch on this memory. Multiple OOM strategies can consistently trigger this condition and lead to remote code execution (RCE).<br> |
| containers > | cna > references > 0 > url | https://github.com/php/php-src/security/advisories/GHSA-w8hw-w9fx-j79w |
| containers > | cna > references > 0 > tags > 0 | vendor-advisory |
| containers > | cna > metrics > 0 > format | CVSS |
| containers > | cna > metrics > 0 > scenarios > 0 > lang | en |
| containers > | cna > metrics > 0 > scenarios > 0 > value | GENERAL |
| containers > | cna > metrics > 0 > cvssV4_0 > attackVector | NETWORK |
| containers > | cna > metrics > 0 > cvssV4_0 > attackComplexity | HIGH |
| containers > | cna > metrics > 0 > cvssV4_0 > attackRequirements | PRESENT |
| containers > | cna > metrics > 0 > cvssV4_0 > privilegesRequired | NONE |
| containers > | cna > metrics > 0 > cvssV4_0 > userInteraction | NONE |
| containers > | cna > metrics > 0 > cvssV4_0 > vulnConfidentialityImpact | HIGH |
| containers > | cna > metrics > 0 > cvssV4_0 > subConfidentialityImpact | NONE |
| containers > | cna > metrics > 0 > cvssV4_0 > vulnIntegrityImpact | HIGH |
| containers > | cna > metrics > 0 > cvssV4_0 > subIntegrityImpact | NONE |
| containers > | cna > metrics > 0 > cvssV4_0 > vulnAvailabilityImpact | HIGH |
| containers > | cna > metrics > 0 > cvssV4_0 > subAvailabilityImpact | NONE |
| containers > | cna > metrics > 0 > cvssV4_0 > exploitMaturity | NOT_DEFINED |
| containers > | cna > metrics > 0 > cvssV4_0 > Safety | NOT_DEFINED |
| containers > | cna > metrics > 0 > cvssV4_0 > Automatable | NOT_DEFINED |
| containers > | cna > metrics > 0 > cvssV4_0 > Recovery | NOT_DEFINED |
| containers > | cna > metrics > 0 > cvssV4_0 > valueDensity | NOT_DEFINED |
| containers > | cna > metrics > 0 > cvssV4_0 > vulnerabilityResponseEffort | NOT_DEFINED |
| containers > | cna > metrics > 0 > cvssV4_0 > providerUrgency | NOT_DEFINED |
| containers > | cna > metrics > 0 > cvssV4_0 > version | 4.0 |
| containers > | cna > metrics > 0 > cvssV4_0 > baseSeverity | CRITICAL |
| containers > | cna > metrics > 0 > cvssV4_0 > baseScore | 9.2 |
| containers > | cna > metrics > 0 > cvssV4_0 > vectorString | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| containers > | cna > workarounds > 0 > lang | en |
| containers > | cna > workarounds > 0 > value | Check the GitHub Security Advisory for mitigation strategies. |
| containers > | cna > workarounds > 0 > supportingMedia > 0 > type | text/html |
| containers > | cna > workarounds > 0 > supportingMedia > 0 > base64 | False |
| containers > | cna > workarounds > 0 > supportingMedia > 0 > value | Check the GitHub Security Advisory for mitigation strategies. |
| containers > | cna > credits > 0 > lang | en |
| containers > | cna > credits > 0 > value | Ryan at Calif.io |
| containers > | cna > credits > 0 > type | reporter |
| containers > | cna > credits > 1 > lang | en |
| containers > | cna > credits > 1 > value | Wiz |
| containers > | cna > credits > 1 > type | reporter |
| containers > | cna > credits > 2 > lang | en |
| containers > | cna > credits > 2 > value | OpenAI |
| containers > | cna > credits > 2 > type | finder |
| containers > | cna > credits > 3 > lang | en |
| containers > | cna > credits > 3 > value | Arnaud Le Blanc |
| containers > | cna > credits > 3 > type | remediation developer |
| containers > | cna > credits > 4 > lang | en |
| containers > | cna > credits > 4 > value | Ilija Tovilo |
| containers > | cna > credits > 4 > type | remediation developer |
| containers > | cna > credits > 5 > lang | en |
| containers > | cna > credits > 5 > value | Jakub Zelenka |
| containers > | cna > credits > 5 > type | remediation developer |
| containers > | cna > credits > 6 > lang | en |
| containers > | cna > credits > 6 > value | Nora Dossche |
| containers > | cna > credits > 6 > type | remediation developer |
| containers > | cna > source > discovery | UNKNOWN |
| containers > | cna > x_generator > engine | Vulnogram 1.0.5 |
| containers > | adp > 0 > references > 0 > url | https://www.wiz.io/blog/php2shell-php-rce |
| containers > | adp > 0 > references > 0 > tags > 0 | third-party-advisory |
| containers > | adp > 0 > metrics > 0 > other > type | ssvc |
| containers > | adp > 0 > metrics > 0 > other > content > timestamp | 2026-10-21T00:00:00+00:00 |
| containers > | adp > 0 > metrics > 0 > other > content > options > 0 > Exploitation | none |
| containers > | adp > 0 > metrics > 0 > other > content > options > 1 > Automatable | no |
| containers > | adp > 0 > metrics > 0 > other > content > options > 2 > Technical Impact | total |
| containers > | adp > 0 > metrics > 0 > other > content > role | CISA Coordinator |
| containers > | adp > 0 > metrics > 0 > other > content > version | 2.0.3 |
| containers > | adp > 0 > metrics > 0 > other > content > id | CVE-2026-109618 |
| containers > | adp > 0 > title | CISA ADP Vulnrichment |
| containers > | adp > 0 > providerMetadata > orgId | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| containers > | adp > 0 > providerMetadata > shortName | CISA-ADP |
| containers > | adp > 0 > providerMetadata > dateUpdated | 2026-10-22T23:04:19.783Z |
| containers > | adp > 1 > title | CVE Program Container |
| containers > | adp > 1 > references > 0 > url | http://www.openwall.com/lists/oss-security/2026/10/21/6 |
| containers > | adp > 1 > references > 1 > url | http://www.openwall.com/lists/oss-security/2026/10/23/5 |
| containers > | adp > 1 > providerMetadata > orgId | af854a3a-2127-422b-91ae-364da2661108 |
| containers > | adp > 1 > providerMetadata > shortName | CVE |
| containers > | adp > 1 > providerMetadata > dateUpdated | 2026-10-23T14:07:55.926Z |
| containers > | adp > 2 > x_adpType | supplier |
| containers > | adp > 2 > providerMetadata > orgId | 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e |
| containers > | adp > 2 > providerMetadata > shortName | siemens-SADP |
| containers > | adp > 2 > providerMetadata > dateUpdated | 2026-10-23T13:15:14.291Z |
| containers > | adp > 2 > affected > 0 > vendor | Siemens |
| containers > | adp > 2 > affected > 0 > product | RUGGEDCOM APE1808 |
| containers > | adp > 2 > affected > 0 > versions > 0 > status | affected |
| containers > | adp > 2 > affected > 0 > versions > 0 > version | 0 |
| containers > | adp > 2 > affected > 0 > versions > 0 > lessThan | * |
| containers > | adp > 2 > affected > 0 > versions > 0 > versionType | custom |
| containers > | adp > 2 > affected > 0 > defaultStatus | unknown |
| containers > | adp > 2 > references > 0 > url | https://cert-portal.siemens.com/productcert/html/ssa-566512.html |