CVE-2026-76987

HIGHPre-NVD 7.37.3—
EchelonGraph scoreHIGH confidence

Score 7.3 from GitHub Security Advisory published 2026-08-20. a secondary CVSS source baseline 7.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: ghsa, secondary
Trending — 4 sources updated this week
7.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 7.3Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A security flaw has been discovered in liftoff-sr CIPster 1802525be27d33e19a9a83c163e331a1d13b1892. The impacted element is the function CipAttribute::GetAttrData/CipAttribute::SetAttrData of the file ciptypes.h of the component Generic Attribute Logic. Performing a manipulation results in memory corruption. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks. The patch is named e745d9d4a8ca3a13689066983a1269fe1e567674. It is suggested to install a patch to address this issue.

CVSS v3
7.3
EG Score
7.3(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity73% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
—
EPSS %ILE
—
KEV
Not listed

Published

August 20, 2026

Last Modified

August 20, 2026

Advisory Details (3)

Auto-updated Aug 20, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

GitHub - liftoff-sr/CIPster: Ethernet/IP (Common Industrial Protocol) stack in C++. This started as a C to C++ conversion of C based OpENer. · GitHub

https://github.com/liftoff-sr/CIPster/
github_commit

commit e745d9d4a8ca (liftoff-sr/CIPster)

Fix landed in liftoff-sr/CIPster commit e745d9d4a8ca — awaiting tagged release

https://github.com/liftoff-sr/CIPster/commit/e745d9d4a8ca3a13689066983a1269fe1e567674
generic

Writable `kCipByteArrayLength` can poison shared `ByteBuf` metadata and trigger out-of-bounds read/write in generic `Get/SetAttributeSingle` paths · Issue #47 · liftoff-sr/CIPster · GitHub

https://github.com/liftoff-sr/CIPster/issues/47

Vendor Advisories for CVE-2026-76987(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 7× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-21 07:05 UTCGHSA enrichment
  2. 2026-08-20 18:17 UTCEG score recompute
  3. 2026-08-20 18:17 UTCGHSA enrichment
  4. 2026-08-20 13:23 UTCEG score recompute
  5. 2026-08-20 13:22 UTCNVD updateCVSS v4 → 5.5
  6. 2026-08-20 12:27 UTCEG score recompute
  7. 2026-08-20 12:26 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2026-76987?
CVE-2026-76987 is a high vulnerability published on August 20, 2026. A security flaw has been discovered in liftoff-sr CIPster 1802525be27d33e19a9a83c163e331a1d13b1892. The impacted element is the function CipAttribute::GetAttrData/CipAttribute::SetAttrData of the file ciptypes.h of the component Generic Attribute Logic. Performing a manipulation results in memory…
When was CVE-2026-76987 disclosed?
CVE-2026-76987 was first published in the National Vulnerability Database on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-76987?
CVE-2026-76987 has a CVSS v3 base score of 7.3 (NVD).
How do I remediate CVE-2026-76987?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-76987, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-76987

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