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Vendor advisories

Security advisories from the vendors you use.

Search new and updated bulletins from Microsoft, Citrix, Cisco, Palo Alto Networks, Fortinet, Ivanti, Delinea, Ubuntu, and AWS. We keep each vendor's advisory ID, affected products, CVEs, severity, dates, and available fix guidance together.

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11Vendor sources
18,563Advisories collected
6,580Published or updated in 30 days
8,318Marked critical or high
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The original vendor bulletin remains the authority. SecurityAlert gives you one place to find it and compare the details vendors publish in different formats.

18,563 advisories

Each date says whether the vendor published or updated the bulletin. A vendor bulletin describes products that may be affected. It does not prove that the vulnerable product or version is installed in your environment.

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Citrix Security BulletinsCTX696811
Medium

XenServer Security Update for CVE-2026-42491

An issue has been identified in the XenServer management API SDK that may allow an attacker on the management network who is able to intercept specific HTTPS requests within a higher-level operation to be able to act with the privileges of the intercepted administrator. This i...

Affected productsXenServer
Vendor guidance

We have released updated versions of both XenCenter and the SDK. We recommend that customers update their existing XenCenter to the latest version using the built-in update functionality as documented at https://docs....

CVE-2026-42491
Read the vendor advisory Watch this product
Fortinet PSIRT AdvisoriesFG-IR-26-146
HighCVSS 7.0

Out of bounds read in GUI

CVSSv3 Score: 7.0 An out of bounds read [CWE-125] vulnerability in FortiAuthenticator may allow a remote unauthenticated attacker to retrieve sensitive information via a specially crafted request. Revised on 2026-07-14 00:00:00

Affected productsFortiAuthenticator
CVE-2025-53379
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Fortinet PSIRT AdvisoriesFG-IR-26-154
MediumCVSS 4.1

Buffer overread in authd and wad daemon

CVSSv3 Score: 4.1 A buffer over-read vulnerability [CWE-126] in FortiOS, FortiProxy, and FortiSASE may allow an authenticated remote attacker to return a portion of device memory in the redirect response via submitting a specially crafted request. Revised on 2026-07-14 00:00:00

Affected productsFortiOS, FortiProxy, FortiSASE
CVE-2025-43892CVE-2026-59840
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Fortinet PSIRT AdvisoriesFG-IR-26-155
MediumCVSS 6.9

Supers override fails to properly override supervisor address

CVSSv3 Score: 6.9 An Improper Restriction of Communication Channel to Intended Endpoints [CWE-923] vulnerability in FortiSIEM Windows Agent may allow an unauthorized attacker on the same local network to execute arbitrary code via spoofing the supervisors hostname when the Win...

Affected productsFortiSIEM
CVE-2026-59841
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Fortinet PSIRT AdvisoriesFG-IR-26-148
MediumCVSS 5.9

Stack Buffer Overflow in Log Report

CVSSv3 Score: 5.9 A Stack-based Buffer Overflow vulnerability [CWE-121] in FortiOS, FortiProxy and FortiPAM may allow a privileged authenticated attacker who can bypass stack protection and ASLR to execute arbitrary code or commands via crafted HTTP requests. Revised on 2026-0...

Affected productsFortiOS, FortiProxy, FortiPAM
CVE-2026-59837
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Fortinet PSIRT AdvisoriesFG-IR-26-150
MediumCVSS 6.1

SSL-VPN Reflected XSS

CVSSv3 Score: 6.1 An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability [CWE-79] in FortiOS, FortiProxy, FortiPAM and FortiSwitch-Manager Agentless SSL-VPN may allow an authenticated remote user to execute code or commands via cr...

Affected productsFortiOS, FortiProxy, FortiPAM, FortiSwitch-Manager
CVE-2026-23573
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Fortinet PSIRT AdvisoriesFG-IR-26-151
MediumCVSS 5.0

Path traversal in CLI command allows deletion of root file system

CVSSv3 Score: 5.0 An Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability [CWE-22] in FortiOS, FortiPAM, FortiProxy and FortiSwitch Manager may allow a privileged authenticated attacker with physical access to the device to delete the fi...

Affected productsFortiOS, FortiPAM, FortiProxy, FortiSwitch
CVE-2026-59839
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Fortinet PSIRT AdvisoriesFG-IR-26-153
LowCVSS 3.1

Header injection in captive portal authentication form

CVSSv3 Score: 3.1 An Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') vulnerability [CWE-113] in FortiOS and FortiProxy captive portal may allow an attacker able to intercept and modify a user's authentication request to inject arbitrary he...

Affected productsFortiOS, FortiProxy
CVE-2025-62826
Read the vendor advisory Watch this product
Before you act

Start with the vendor's bulletin.

We normalize the fields that vendors publish so you can search and compare advisories in one place. We do not replace the original bulletin or turn a product-name match into proof that a system is vulnerable.

Confirm the installed product and version, read the linked vendor guidance, and test the recommended update or mitigation through your normal change process.

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