Eos vulnerabilitiesAnd the versions its exploited flaws hit.
Eos is made by Arista. We track 45 published vulnerabilities in it, across 227 versions. 3 of them are on the list of flaws known to be exploited, the newest added on 9 June 2026. If you run Eos, check your version against the exploited flaws below and patch those first.
The most recent Eos flaw added to the known-exploited list is CVE-2026-7473, on 9 June 2026. We keep watching the known-exploited list.
Which versions of Eos do the exploited flaws hit?
Each exploited flaw lists the versions it affects, usually as ranges. "4.9.0 to before 4.9.12" means from 4.9.0 up to, but not including, 4.9.12. Find your version, then patch.
- CVE-2026-7473Exploited list, 9 Jun 2026
Arista Extensible Operating System Incomplete Comparison with Missing Factors Vulnerability
all versions - CVE-2014-6271Exploited list, 28 Jan 2022
GNU Bourne-Again Shell (Bash) Arbitrary Code Execution Vulnerability
4.9.0 to before 4.9.124.10.0 to before 4.10.94.11.0 to before 4.11.114.12.0 to before 4.12.94.13.0 to before 4.13.94.14.0 to before 4.14.4f - CVE-2014-7169Exploited list, 28 Jan 2022
GNU Bourne-Again Shell (Bash) Arbitrary Code Execution Vulnerability
4.9.0 to before 4.9.124.10.0 to before 4.10.94.11.0 to before 4.11.114.12.0 to before 4.12.94.13.0 to before 4.13.94.14.0 to before 4.14.4f
Which Eos vulnerabilities are being exploited?
3 flaws are 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.
- 6.9Arista Extensible Operating System Incomplete Comparison with Missing Factors Vulnerability
Arista Extensible Operating System (EOS) contains an incomplete comparison with missing factors vulnerability when the switch incorrectly decapsulate and forwards other unexpected tunneled packet with a destination...
- 9.8GNU Bourne-Again Shell (Bash) Arbitrary Code Execution Vulnerability
GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables, which allows remote attackers to execute code.
- 9.8GNU Bourne-Again Shell (Bash) Arbitrary Code Execution Vulnerability
GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables, which allows remote attackers to execute code.
Which Eos 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.
- >99%
GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables, which allows remote attackers to execute arbitrary code via a crafted environment, as demonstrated by...
- >99%
GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed function definitions in the values of environment variables, which allows remote attackers to write to files or possibly have unknown...
- >99%CVE-2024-6387High
A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd).
- 85%CVE-2017-14491Critical
Heap-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted DNS response.
- 74%CVE-2020-10188Critical
utility.c in telnetd in netkit telnet through 0.17 allows remote attackers to execute arbitrary code via short writes or urgent data, because of a buffer overflow involving the netclear and nextitem functions.
- 53%CVE-2017-18017Critical
The tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c in the Linux kernel before 4.11, and 4.9.x before 4.9.36, allows remote attackers to cause a denial of service (use-after-free and memory corruption) or...
- 13%CVE-2015-5165Critical
The C+ mode offload emulation in the RTL8139 network card device model in QEMU, as used in Xen 4.5.x and earlier, allows remote attackers to read process heap memory via unspecified vectors.
- 9.7%CVE-2015-3209High
Heap-based buffer overflow in the PCNET controller in QEMU allows remote attackers to execute arbitrary code by sending a packet with TXSTATUS_STARTPACKET set and then a crafted packet with TXSTATUS_DEVICEOWNS set.
- 4.7%CVE-2019-17596High
Go before 1.12.11 and 1.3.x before 1.13.2 can panic upon an attempt to process network traffic containing an invalid DSA public key.
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1 flaw being exploited affects software Acme tracks
Arista Extensible Operating System (EOS) contains an incomplete comparison with missing factors vulnerability when the switch incorrectly decapsulate and forwards other unexpected tunneled packet with a destination IP matching its configured decapsulation IP.
- Matched to
- Eos 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 45 published vulnerabilities listed under the name Eos, across 227 versions. The most recent Eos flaw added to the known-exploited list is CVE-2026-7473, on 9 June 2026.
3 are on the list of flaws known to be exploited. The most recently added are CVE-2026-7473, CVE-2014-6271 and CVE-2014-7169.
Each flaw names its own versions, usually as ranges. The newest, CVE-2026-7473, affects all versions. The versions for every exploited flaw are listed on this page.
Create a Precursor Intelligence account and track Eos. 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.