PatchTheCEVCVE-2026-76390: In Cisco Talos Intelligence for Enterprise Security Cloud versions below 1.0.3, an unauthenticated user could
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Routine
MEDIUM 5.3REMOTEUPGRADE
CVE-2026-76390 is a medium-severity flaw (CVSS 5.3) affecting talos intelligence for enterprise security cloud. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
In Cisco Talos Intelligence for Enterprise Security Cloud versions below 1.0.3, an unauthenticated user could access the add-on OpenAPI specification through Splunk Web static file paths. The exposed specification could allow for reconnaissance of the add-on Representational State Transfer (REST) API endpoints and authentication model. The vulnerability is possible because the generated OpenAPI specification is packaged in a static file path that
Why this priority
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.3 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.4% (top 68%) |
| CISA exploited list | No |
| Weakness | CWE-200 |
| Published | 2026-08-19 |
| Last modified | 2026-10-23 |
Publisher (CNA): Cisco Systems, Inc. · Vendor: cisco
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
cisco talos intelligence for enterprise security cloud UPGRADE
Affected: >= 1.0.0 and < 1.0.3
Fixed in: 1.0.3
Safe to downgrade to: a release before 1.0.0
1. Check installed version
apt-cache policy talos-intelligence-for-enterprise-security-cloud || rpm -q talos-intelligence-for-enterprise-security-cloud || talos-intelligence-for-enterprise-security-cloud --version
2. UPGRADE to 1.0.3 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade talos-intelligence-for-enterprise-security-cloud
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade talos-intelligence-for-enterprise-security-cloud
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 1.0.0 (Debian / Ubuntu)
apt-cache madison talos-intelligence-for-enterprise-security-cloud
sudo apt install talos-intelligence-for-enterprise-security-cloud=<VERSION_BEFORE_1.0.0>
sudo apt-mark hold talos-intelligence-for-enterprise-security-cloud
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list talos-intelligence-for-enterprise-security-cloud
sudo dnf downgrade talos-intelligence-for-enterprise-security-cloud-<VERSION_BEFORE_1.0.0>
sudo dnf versionlock add talos-intelligence-for-enterprise-security-cloud
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.