Linux vulnerabilities exploited in the wild
The Linux CVEs that CISA lists as exploited, newest first. Only confirmed exploitation appears here, each with its EPSS and the CVSS as published.
Build snapshot collected · KEV catalog 2026.10.02 · EPSS of 2 Oct 2026 · not a live feed: collected once, at build time
- 31
- flaws with confirmed attacks
- 2
- used by ransomware
- 1.8%
- of the whole catalog
12 vulnerabilities · newest first.Showing the entries bundled with this page while the full catalog loads.
- CVE-2025-39682Exploited · KEV: listed in the CISA Known Exploited Vulnerabilities catalog
Linux · Kernel
Linux Kernel Improper Check for Unusual or Exceptional Conditions Vulnerability
Severity
9.8CRITICALCVSS 3.1 · NVDAttack probability (EPSS)
2.88%86th pctKEV dates
added due - CVE-2025-39964Exploited · KEV: listed in the CISA Known Exploited Vulnerabilities catalog
Linux · Kernel
Linux Kernel Race Condition Vulnerability
Severity
5.5MEDIUMCVSS 3.1 · NVDAttack probability (EPSS)
1.00%61th pctKEV dates
added due - CVE-2026-53266Exploited · KEV: listed in the CISA Known Exploited Vulnerabilities catalog
Linux · Kernel
Linux Kernel Out-of-Bounds Write Vulnerability
Severity
8.8HIGHCVSS 3.1 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67Attack probability (EPSS)
0.83%56th pctKEV dates
added due - CVE-2026-53362Exploited · KEV: listed in the CISA Known Exploited Vulnerabilities catalog
Linux · Kernel
Linux Kernel Unspecified Vulnerability
Severity
7.8HIGHCVSS 3.1 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67Attack probability (EPSS)
0.71%52th pctKEV dates
added due - CVE-2022-0995Exploited · KEV: listed in the CISA Known Exploited Vulnerabilities catalog
Linux · Kernel
Linux Kernel Out-of-Bounds Write Vulnerability
Severity
7.8HIGHCVSS 3.1 · NVDAttack probability (EPSS)
8.79%95th pctKEV dates
added due - CVE-2022-0492Exploited · KEV: listed in the CISA Known Exploited Vulnerabilities catalog
Linux · Kernel
Linux Kernel Improper Authentication Vulnerability
Severity
7.8HIGHCVSS 3.1 · NVDAttack probability (EPSS)
5.53%93th pctKEV dates
added due - CVE-2026-31431Exploited · KEV: listed in the CISA Known Exploited Vulnerabilities catalog
Linux · Kernel
Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability
Severity
7.8HIGHCVSS 3.1 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67Attack probability (EPSS)
3.44%89th pctKEV dates
added due - CVE-2018-14634Exploited · KEV: listed in the CISA Known Exploited Vulnerabilities catalog
Linux · Kernel
Linux Kernel Integer Overflow Vulnerability
Severity
7.8HIGHCVSS 3.0 · NVDAttack probability (EPSS)
14.7%97th pctKEV dates
added due - CVE-2021-22555Exploited · KEV: listed in the CISA Known Exploited Vulnerabilities catalog
Linux · Kernel
Linux Kernel Heap Out-of-Bounds Write Vulnerability
Severity
7.8HIGHCVSS 3.1 · NVDAttack probability (EPSS)
78.7%99.6th pctKEV dates
added due - CVE-2025-38352Exploited · KEV: listed in the CISA Known Exploited Vulnerabilities catalog
Linux · Kernel
Linux Kernel Time-of-Check Time-of-Use (TOCTOU) Race Condition Vulnerability
Severity
7.8HIGHCVSS 3.1 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67Attack probability (EPSS)
1.29%69th pctKEV dates
added due - CVE-2023-0386Exploited · KEV: listed in the CISA Known Exploited Vulnerabilities catalog
Linux · Kernel
Linux Kernel Improper Ownership Management Vulnerability
Severity
7.8HIGHCVSS 3.1 · NVDAttack probability (EPSS)
7.88%95th pctKEV dates
added due - CVE-2024-53197Exploited · KEV: listed in the CISA Known Exploited Vulnerabilities catalog
Linux · Kernel
Linux Kernel Out-of-Bounds Access Vulnerability
Severity
7.8HIGHCVSS 3.1 · CISA-ADPAttack probability (EPSS)
3.56%89th pctKEV dates
added due
Linux products in the catalog
Among the most recent entries, the products that appear most often are:
- Kernel12 entries
Product names are the ones CISA uses in the catalog. To check a specific Linux CVE that is not on this page, use the CVE lookup: it shows the record, the affected versions and the EPSS score even when the CVE is not in KEV.
Fixed versions and workarounds are published by the vendor: linux-cve-announce mailing list.
Other vendors
- Microsoft389exploited · 117 in ransomware
- Cisco100exploited · 7 in ransomware
- Apple95exploited · 0 in ransomware
- Adobe82exploited · 11 in ransomware
- Google75exploited · 0 in ransomware
- Oracle46exploited · 13 in ransomware
- Apache40exploited · 8 in ransomware
- Ivanti35exploited · 12 in ransomware
- Fortinet31exploited · 14 in ransomware
- Citrix26exploited · 7 in ransomware
- D-Link26exploited · 2 in ransomware
Questions
How many Linux vulnerabilities are known to be exploited?
The CISA KEV catalog, version 2026.10.02, lists 31 Linux vulnerabilities as of 3 Oct 2026. CISA marks 2 of them as known to be used in ransomware campaigns.
What is the most recent Linux entry in KEV?
CVE-2025-39682 (Linux Kernel Improper Check for Unusual or Exceptional Conditions Vulnerability), added on 18 Sep 2026 with a due date of 21 Sep 2026 for US federal agencies, as of the collection of 3 Oct 2026.
Does this page list every Linux CVE?
No. It lists only the Linux CVEs that CISA has confirmed as exploited. Linux publishes many more CVEs that are not in KEV; look up any of them by identifier in the CVE lookup to see its record and EPSS score.
In what order should Linux vulnerabilities be patched?
Everything on this page is already confirmed as exploited, so all of it is urgent where the product is in use. Within the list, entries marked with known ransomware use and those with the highest EPSS come first in the "Risk" order; internet-facing systems should go before internal ones.
Related sections
- WatchlistWhat attackers started using this month, most urgent first.
- Exploited catalogEvery flaw CISA lists as used in real attacks (KEV), searchable.
- CVE lookupType one identifier: attack status, probability, severity, versions.
- Attack probabilityEPSS score for up to 100 identifiers at once.
- VendorsWhich vendors have the most exploited flaws.
- RSS and JSON feedsFollow new exploited flaws for the vendors you run.
- Sources and methodWhere each number comes from and how the order is decided.