Fabric Operating System vulnerabilitiesAnd the versions its exploited flaws hit.
Fabric Operating System is made by Brocade. We track 10 published vulnerabilities in it, across 5 versions. 1 of them is on the list of flaws known to be exploited, the newest added on 6 October 2025. If you run Fabric Operating System, check your version against the exploited flaws below and patch those first.
The most recent Fabric Operating System flaw added to the known-exploited list is CVE-2021-22555, on 6 October 2025. We keep watching the known-exploited list.
Which versions of Fabric Operating System do the exploited flaws hit?
Each exploited flaw lists the versions it affects, as published by the vendor. Find your version, then patch.
Which Fabric Operating System vulnerabilities are being exploited?
1 flaw is on the government list of vulnerabilities known to be exploited. These are the ones criminals are using now, so they go first, whatever their severity score says.
- 7.8Linux Kernel Heap Out-of-Bounds Write Vulnerability
Linux Kernel contains a heap out-of-bounds write vulnerability that could allow an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space.
Which Fabric Operating System flaws are most likely to be used?
Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.
- 79%
A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c.
- 4.1%CVE-2022-27776Medium
A insufficiently protected credentials vulnerability in fixed in curl 7.83.0 might leak authentication or cookie header data on HTTP redirects to the same host but another port number.
- 3.3%CVE-2022-27775High
An information disclosure vulnerability exists in curl 7.65.0 to 7.82.0 are vulnerable that by using an IPv6 address that was in the connection pool but with a different zone id it could reuse a connection instead.
- 2.5%CVE-2022-22576High
An improper authentication vulnerability exists in curl 7.33.0 to and including 7.82.0 which might allow reuse OAUTH2-authenticated connections without properly making sure that the connection was authenticated with...
- 2.0%CVE-2022-27774Medium
An insufficiently protected credentials vulnerability exists in curl 4.9 to and include curl 7.82.0 are affected that could allow an attacker to extract credentials when follows HTTP(S) redirects is used with...
- 1.0%CVE-2020-13630High
ext/fts3/fts3.c in SQLite before 3.32.0 has a use-after-free in fts3EvalNextRow, related to the snippet feature.
- 0.7%CVE-2020-13631Medium
SQLite before 3.32.0 allows a virtual table to be renamed to the name of one of its shadow tables, related to alter.c and build.c.
- 0.6%CVE-2020-13632Medium
ext/fts3/fts3_snippet.c in SQLite before 3.32.0 has a NULL pointer dereference via a crafted matchinfo() query.
- 0.2%CVE-2023-4162Medium
A segmentation fault can occur in Brocade Fabric OS after Brocade Fabric OS v9.0 and before Brocade Fabric OS v9.2.0a through the passwdcfg command.
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1 flaw being exploited affects software Acme tracks
Linux Kernel contains a heap out-of-bounds write vulnerability that could allow an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space.
- Matched to
- Fabric Operating System on Acme's software list
- What to do
- Patch first, then check for signs of use
Sent to the alert recipients Acme chose. Also in the app and to Acme's webhook.
We track 10 published vulnerabilities listed under the name Fabric Operating System, across 5 versions. The most recent Fabric Operating System flaw added to the known-exploited list is CVE-2021-22555, on 6 October 2025.
1 is on the list of flaws known to be exploited. The most recently added is CVE-2021-22555.
Create a Precursor Intelligence account and track Fabric Operating System. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.