Vulnerability database
Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.
10 results
Jul 20, 2026The mv, cp, and rm file utilities exposed within the ExtremeXOS (EXOS) shell environment fail to safely canonicalize paths and follow symbolic links outside of CVE-2026-8170 · Other software · Extreme Networks · reported by 1c053176-eef3-4d6a-ae0b-24728c86587bHigh 8.7
The mv, cp, and rm file utilities exposed within the ExtremeXOS (EXOS) shell environment fail to safely canonicalize paths and follow symbolic links outside of the intended privilege boundary. An attacker with low-privilege CLI access can create a symbolic link that references a privileged filesystem location and then invoke the affected utilities to read, modify, or replace security-critical files outside of their authorized scope. Under certain conditions, this may enable escalation to root-level access and persistent modification of the device software stack. Exploitation is possible remotely by an attacker holding a low-privilege account, or locally via the serial console. Extreme would like to thank Hadrien Barral (Université Gustave Eiffel) and Georges-Axel Jaloyan (French Ministry of the Interior) for responsible disclosure of their findings.
- Product
- Switch Engine (EXOS)
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 20, 2026ExtremeXOS (EXOS) uses a challenge-response mechanism to authorize access to the privileged debug-mode function.CVE-2026-8169 · Other software · Extreme Networks · reported by 1c053176-eef3-4d6a-ae0b-24728c86587bHigh 8.7
ExtremeXOS (EXOS) uses a challenge-response mechanism to authorize access to the privileged debug-mode function. The challenge value is generated using an insufficiently random source, which under certain conditions may allow an attacker to predict the expected response and activate debug-mode without authorization. Depending on device configuration and version, this may enable escalation to root-level access and persistent modification of the device software stack. Exploitation requires either a valid low-privilege account on the device (remote scenario) or physical serial console access (local scenario). This vulnerability is distinct from CVE-2017-14329, which addressed a different issue involving Python script privileges. Extreme would like to thank Hadrien Barral (Université Gustave Eiffel) and Georges-Axel Jaloyan (French Ministry of the Interior) for responsible disclosure of their findings.
- Product
- Switch Engine (EXOS)
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Nov 10, 2024The BGP daemon in Extreme Networks ExtremeXOS (aka EXOS) 30.7.1.1 allows an attacker (who is not on a directly connected network) to cause a denial of service (CVE-2023-40457 · Other software · extremenetworks · reported by MITRE
The BGP daemon in Extreme Networks ExtremeXOS (aka EXOS) 30.7.1.1 allows an attacker (who is not on a directly connected network) to cause a denial of service (BGP session reset) because of BGP attribute error mishandling (for attribute 21 and 25). NOTE: the vendor disputes this because it is "evaluating support for RFC 7606 as a future feature" and believes that "customers that have chosen to not require or implement RFC 7606 have done so willingly and with knowledge of what is needed to defend against these types of attacks."
- Product
- extremeos
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordblog.benjojo.co.ukblog.benjojo.co.uk
May 3, 2024In Extreme XOS through 22.6.1.4, a read-only user can escalate privileges to root via a crafted HTTP POST request to the python method of the Machine-to-MachineCVE-2024-27453 · Other software · extremenetworks · reported by MITREHigh 8.6
In Extreme XOS through 22.6.1.4, a read-only user can escalate privileges to root via a crafted HTTP POST request to the python method of the Machine-to-Machine Interface (MMI).
- Product
- extremexos
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordextreme-networks.my.site.comexsiliumsecurity.com
Oct 23, 2017Extreme EXOS 15.7, 16.x, 21.x, and 22.x allows remote attackers to hijack sessions by determining SessionID values.CVE-2017-14332 · Other software · Extremenetworks · reported by MITREHigh 8.1
Extreme EXOS 15.7, 16.x, 21.x, and 22.x allows remote attackers to hijack sessions by determining SessionID values.
- Product
- Extremexos
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordextremeportal.force.comextremeportal.force.com
Oct 23, 2017Extreme EXOS 16.x, 21.x, and 22.x allows administrators to bypass the "exsh restricted shell" protection mechanism and obtain an interactive shell.CVE-2017-14331 · Other software · Extremenetworks · reported by MITREMedium 6.7
Extreme EXOS 16.x, 21.x, and 22.x allows administrators to bypass the "exsh restricted shell" protection mechanism and obtain an interactive shell.
- Product
- Extremexos
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordextremeportal.force.comextremeportal.force.com
Oct 23, 2017Extreme EXOS 16.x, 21.x, and 22.x allows administrators to obtain a root shell via vectors involving a privileged process.CVE-2017-14330 · Other software · Extremenetworks · reported by MITREMedium 6.7
Extreme EXOS 16.x, 21.x, and 22.x allows administrators to obtain a root shell via vectors involving a privileged process.
- Product
- Extremexos
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordextremeportal.force.comextremeportal.force.com
Oct 23, 2017Extreme EXOS 16.x, 21.x, and 22.x allows administrators to obtain a root shell via vectors involving an exsh debug shell.CVE-2017-14329 · Other software · Extremenetworks · reported by MITREMedium 6.7
Extreme EXOS 16.x, 21.x, and 22.x allows administrators to obtain a root shell via vectors involving an exsh debug shell.
- Product
- Extremexos
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordextremeportal.force.comextremeportal.force.com
Oct 23, 2017Extreme EXOS 15.7, 16.x, 21.x, and 22.x allows remote attackers to trigger a buffer overflow leading to a reboot.CVE-2017-14328 · Other software · Extremenetworks · reported by MITREHigh 7.5
Extreme EXOS 15.7, 16.x, 21.x, and 22.x allows remote attackers to trigger a buffer overflow leading to a reboot.
- Product
- Extremexos
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordextremeportal.force.comextremeportal.force.com
Oct 23, 2017Extreme EXOS 16.x, 21.x, and 22.x allows administrators to read arbitrary files.CVE-2017-14327 · Other software · Extremenetworks · reported by MITREMedium 4.4
Extreme EXOS 16.x, 21.x, and 22.x allows administrators to read arbitrary files.
- Product
- Extremexos
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordextremeportal.force.comextremeportal.force.com
Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.
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