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CVE-2026-51540EXPLOITED

CVE-2026-51540: OpENer 2.3.0 (master branch up to commit 76b95cf) is vulnerable to a severe memory corruption issue caused by an integer

Description

A vulnerability, which was classified as very critical, was found in EIPStackGroup OpENer up to 2.3.0. This issue affects some unknown processing of the component SendUnitData. Executing a manipulation can lead to integer underflow.

Affected Products

VendorProductVersions
—n/an/a, 2.3.0

References

  • https://github.com/EIPStackGroup/OpENer/issues/568
  • https://gist.github.com/MrAlaskan/5e0c2af7f4a1d188814c7fa8f812c8da

Related News (1 articles)

Tier C
VulDB3h ago
CVE-2026-51540 | EIPStackGroup OpENer up to 2.3.0 SendUnitData integer underflow
→ No new info (linked only)
CISA KEV❌ No
Actively exploited✅ Yes
PublishedJul 13, 2026
Last enriched3h agov2
Trending Score46
Source articles1
Independent1
Info Completeness6/14
Missing: cvss, epss, cwe, kev, exploit, patch, iocs, mitre_attack

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Verification

State: unverified
Confidence: 0%

Vulnerability Timeline

CVE Published
Jul 13, 2026
Actively Exploited
Jul 13, 2026
Discovered by ZDM
Jul 13, 2026
Updated: description, affectedVersions, severity, activelyExploited
Jul 13, 2026

Version History

v2
Last enriched 3h ago
v2Tier C3h ago

Updated vendor to EIPStackGroup, product to OpENer, severity to HIGH, and marked the vulnerability as actively exploited.

descriptionaffectedVersionsseverityactivelyExploited
via VulDB
v13h ago

Initial creation