CVE-2026-75349: OpENer · Uncontrolled Resource Consumption
Affects OpENerSource CVE Database V5
Not known to be exploited · CVSS 7.5 High : upgrade to 2.3.0 soon.
Data as of 26 Oct 2026, 17:16 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 39% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 2.3.0
CVSS:3.1/AC:L/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:NExploitation evidence
Disclosed: evidence found.
CVE published 9 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade eipstackgroup/OpENer to 2.3.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
GitHubeipstackgroup/OpENerpkg:github/eipstackgroup/OpENerOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
If you cannot patch yet, consider limiting exposure of the affected service to untrusted networks.
Description
EIPStackGroup OpENer versions prior to 2.3.0 contain an out-of-bounds read vulnerability in the Connection Manager request parsing component. This flaw allows a remote attacker to cause a denial of service by triggering the vulnerability. The issue has a high severity rating with a CVSS score of 7.5.
References
- github.com/EIPStackGroup/OpENer (opens in a new tab)
- github.com/EIPStackGroup/OpENer/blob/76b95cf/source/src/cip/cipmessagerouter.c (opens in a new tab)
- github.com/EIPStackGroup/OpENer/issues/577 (opens in a new tab)
- github.com/EIPStackGroup/OpENer/blob/76b95cf/source/src/cip/cipconnectionmanager.c (opens in a new tab)
- github.com/EIPStackGroup/OpENer/blob/76b95cf/source/src/enet_encap/cpf.c (opens in a new tab)
- github.com/EIPStackGroup/OpENer/blob/76b95cf/source/src/enet_encap/encap.c (opens in a new tab)