CVE-2026-75346: OpENer · CVE-2026-75346 is an out-of-bounds read
Affects OpENerSource CVE Database V5
Not known to be exploited · CVSS 7.5 High.
Data as of 26 Oct 2026, 14:05 UTC
- EPSS
- 0.5% chance of exploitation in 30 days – higher than 45% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation 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
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.
Description
CVE-2026-75346 is an out-of-bounds read vulnerability in EIPStackGroup OpENer version 2.3 and the master branch through commit 76b95cf. It affects the server-side CIP SetAttributeList service and allows a remote attacker to cause a denial of service. The vulnerability has a high severity with a CVSS score of 7.5. No patch or remediation information is currently provided.
References
- github.com/EIPStackGroup/OpENer (opens in a new tab)
- github.com/EIPStackGroup/OpENer/issues/572 (opens in a new tab)
- github.com/EIPStackGroup/OpENer/blob/master/source/src/cip/cipcommon.c (opens in a new tab)
- github.com/EIPStackGroup/OpENer/blob/master/source/src/cip/ciptypes.c (opens in a new tab)
- github.com/EIPStackGroup/OpENer/blob/master/source/src/enet_encap/endianconv.c (opens in a new tab)
- github.com/EIPStackGroup/OpENer/blob/master/source/src/cip/cipidentity.c (opens in a new tab)