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CVE

CVE-2026-109618

RCE via OOM corruption
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CVE

CVE-2026-109618

RCE via OOM corruption

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).

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.2
-
4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

http://seclists.org/fulldisclosure/2026/Oct/51, http://www.openwall.com/lists/oss-security/2026/10/21/6, http://www.openwall.com/lists/oss-security/2026/10/23/5, https://cert-portal.siemens.com/productcert/html/ssa-166980.html, https://cert-portal.siemens.com/productcert/html/ssa-566435.html, https://cert-portal.siemens.com/productcert/html/ssa-566512.html, https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-109618, https://arcticwolf.com/resources/blog/php2shell-critical-php-vulnerabilities-enable-unauthenticated-remote-code-execution/, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109618.json, https://github.com/php/php-src/security/advisories/GHSA-w8hw-w9fx-j79w, https://nvd.nist.gov/vuln/detail/CVE-2026-109618, https://php2shell.delftintellab.com, https://www.wiz.io/blog/php2shell-php-rce

Severity

0

CVSS Score
0
10

Basic Information

Base CVSS
0
EPSS Probability
0.99999%
EPSS Percentile
0.99999%
Introduced Version
685e99655ae97c667950f7f7d176985958718f56,0,8.2.0,8.3.0,8.4.0,8.5.0,7.3.0
Fix Available
136e049ac10b032c83018e65b63b6df858943750,0:8.2.35-1.module+el8.10.0+25110+f67151d2,0:5.1.23-1.module+el8.10.0+20770+a5eca186,0:1.22.3-1.module+el8.10.0+20770+a5eca186,0:1.7.3-1.module+el8.10.0+20770+a5eca186,1:1.10.14-1.module+el8.10.0+20770+a5eca186,0:2.0.3-1.module+el8.10.0+20770+a5eca186,0:3.2.2-2.module+el8.10.0+20798+00eaeb41,0:7.4.33-8.module+el8.10.0+25117+30337cca,0:5.1.18-1.module+el8.10.0+22485+a3539972,0:1.6.1-1.module+el8.10.0+22485+a3539972,0:2.9.5-1.module+el8.10.0+22485+a3539972,0:2.0.1-1.module+el8.10.0+22485+a3539972,1:1.10.13-1.module+el8.10.0+22485+a3539972,0:1.18.2-1.module+el8.10.0+22485+a3539972,0:8.2.35-1.module+el9.8.0+25111+a1450321,0:1.22.3-1.module+el9.7.0+24111+199d2cc4,0:3.2.2-2.module+el9.7.0+24111+199d2cc4,0:5.1.23-1.module+el9.7.0+24111+199d2cc4,0:2.0.3-4.module+el9.7.0+24111+199d2cc4,0:8.3.36-1.module+el9.8.0+25109+6886e21a,0:5.1.23-1.module+el9.8.0+24343+756b4fcd,0:1.22.3-1.module+el9.8.0+24343+756b4fcd,0:2.0.3-4.module+el9.8.0+24343+756b4fcd,0:6.1.0-3.module+el9.8.0+24343+756b4fcd,0:3.3.1-1.module+el9.8.0+24343+756b4fcd,0:8.0.30-8.el9_8.1,0:8.4.27-1.module+el9.9.0+25112+f4f032cf,0:6.2.0-3.module+el9.9.0+24551+b05e3fee,0:5.1.27-2.module+el9.9.0+24551+b05e3fee,0:1.22.7-2.module+el9.9.0+24551+b05e3fee,0:2.0.3-19.module+el9.9.0+24551+b05e3fee,0:3.4.7-3.module+el9.9.0+24551+b05e3fee,8.3.36-1.el10_2,8.4.27-2.el10_3.1,8.4.27-1~deb13u1,8.2.35-1~deb12u1,8.5.4-0ubuntu1.5,7.2.24-0ubuntu0.18.04.17+esm14,7.4.3-4ubuntu2.29+esm5,8.3.6-0ubuntu0.24.04.13,8.1.2-1ubuntu2.28,8.3.36-r0,8.4.27-r0,8.5.12-r0,8.2.35-r0,0:8.2.35-1.module+el9.8.0+91079+4ad1bd7f,0:5.1.23-1.module+el9.4.0+90261+af5cc950,0:2.0.3-4.module+el9.4.0+90261+af5cc950,0:3.2.2-2.module+el9.4.0+90261+af5cc950,0:1.22.3-1.module+el9.4.0+90261+af5cc950,0:5.1.23-1.module+el9.8.0+90982+92b8b4c7,0:8.3.36-1.module+el9.8.0+91082+c865dc1a,0:6.1.0-3.module+el9.8.0+90982+92b8b4c7,0:2.0.3-4.module+el9.8.0+90982+92b8b4c7,0:3.3.1-1.module+el9.8.0+90982+92b8b4c7,0:1.22.3-1.module+el9.8.0+90982+92b8b4c7,0:5.1.23-1.module+el8.10.0+90469+8883f508,0:1.7.3-1.module+el8.10.0+90469+8883f508,0:8.2.35-1.module+el8.10.0+91081+33b5c645,1:1.10.14-1.module+el8.10.0+90469+8883f508,0:2.0.3-1.module+el8.10.0+90469+8883f508,0:3.2.2-2.module+el8.10.0+90469+8883f508,0:1.22.3-1.module+el8.10.0+90469+8883f508,0:5.1.18-1.module+el8.10.0+90472+f810484b,0:1.6.1-1.module+el8.10.0+90472+f810484b,0:7.4.33-8.module+el8.10.0+91080+9785160d,1:1.10.13-1.module+el8.10.0+90472+f810484b,0:2.0.1-1.module+el8.10.0+90472+f810484b,0:2.9.5-1.module+el8.10.0+90472+f810484b,0:1.18.2-1.module+el8.10.0+90472+f810484b,0:8.4.27-1.el10_2,0:8.3.36-1.el10_2,0:8.2.35-1.amzn2.0.1,0:8.2.35-1.amzn2023.0.1,0:8.3.36-1.amzn2023.0.1,0:8.4.27-1.amzn2023.0.1,0:8.5.12-1.amzn2023.0.1,8.2.34-r4,8.3.35-r4,8.4.26-r4,8.5.11-r4,8.2.35,8.3.36,8.4.27,8.5.12

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