CVE-2026-109619
HIGH CISA KEVDescription
PHP has various global state that temporarily points into request memory. In some scenarios, global state may not be correctly reset, or may be repopulated after being reset. The global state may then refer to request memory even after it has been freed. Subsequent requests may read or branch on this stale state before it is fully initialized. Multiple strategies can trigger this condition and produce remote code execution (RCE).
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CVSS v3.1 Score
8.1
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS — Exploit Prediction
1.0000
Probability of exploitation
1.00%
Percentile rank
EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.
CISA Known Exploited Vulnerability
This vulnerability is actively exploited in the wild.
Added: Oct 26, 2026
Remediation due: Oct 29, 2026
Weakness Type (CWE)
CWE-416
Use After Free
CWE-755
CWE-755
CWE-824
CWE-824
CWE-1325
CWE-1325
Affected Products
| Vendor | Product |
|---|---|
| php | php |
| php | php |
| php | php |
| php | php |
| siemens | ruggedcom_ape1808_firmware |
| siemens | ruggedcom_ape1808 |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
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| paloaltonetworks | pan-os |
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| paloaltonetworks | pan-os |
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| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | pan-os |
| paloaltonetworks | panorama_m-200 |
| paloaltonetworks | panorama_m-300 |
| paloaltonetworks | panorama_m-500 |
| paloaltonetworks | panorama_m-600 |
| paloaltonetworks | panorama_m-700 |
| paloaltonetworks | panorama_virtual_appliance |
| paloaltonetworks | pan-os |
| paloaltonetworks | wf-500 |
| paloaltonetworks | wf-500-b |
References
Advisories & Patches
Other References
http://www.openwall.com/lists/oss-security/2026/10/21/16
http://www.openwall.com/lists/oss-security/2026/10/21/17
http://www.openwall.com/lists/oss-security/2026/10/21/23
http://www.openwall.com/lists/oss-security/2026/10/21/7
http://www.openwall.com/lists/oss-security/2026/10/22/14
http://www.openwall.com/lists/oss-security/2026/10/22/15
http://www.openwall.com/lists/oss-security/2026/10/22/16
http://www.openwall.com/lists/oss-security/2026/10/22/19
http://www.openwall.com/lists/oss-security/2026/10/22/2
http://www.openwall.com/lists/oss-security/2026/10/22/20
Frequently Asked Questions
What is CVE-2026-109619? +
PHP has various global state that temporarily points into request memory. In some scenarios, global state may not be correctly reset, or may be repopulated after being reset. The global state may then refer to request memory even after it has been freed. Subsequent requests may read or branch on this stale state before it is fully initialized. Multiple strategies can trigger this condition and produce remote code execution (RCE). It has a CVSS v3.1 base score of 8.1 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.
How severe is CVE-2026-109619? +
CVE-2026-109619 has a CVSS v3.1 score of 8.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 1.0000, placing it in the 1th percentile for exploitation probability.
What products are affected by CVE-2026-109619? +
CVE-2026-109619 affects products from paloaltonetworks, php, siemens, specifically: pan-os, panorama_m-200, panorama_m-300, panorama_m-500, panorama_m-600, panorama_m-700, panorama_virtual_appliance, php, ruggedcom_ape1808, ruggedcom_ape1808_firmware, wf-500, wf-500-b. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2026-109619? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.
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