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CVE-2026-54634

CVE-2026-54634

validatedZero produced an exploit or a check.

GHSA-gpcq-c37x-pr46 ↗EUVD-2026-82573 ↗

check availableZero validated a working check for it.not proven exploitableZero has a detection check, but hasn't produced a full working exploit yet.
cve.orgpublic pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).−102dkevAttacks confirmed in the real world.
other:Hamlib/Hamlib 5.0.0~git
CWE-787 Out-of-bounds Write
ETK-2026-2702Zero's internal tracking ID, independent of the CVE number., permanent identifier
cvss7.3cna vendorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
+39dTTV
21mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = trigger signal
public poc−3.3motrigger signal (cve.org) +0mocheck available+1.3moagent stopped
−3mo
−2mo
−1mo
0
+1mo

description

Hamlib rigctld versions before 4.7.2 contain a stack bounds error and an uninitialized-memory exposure in the send_raw command handler. An attacker able to reach the daemon can disrupt it, corrupt adjacent process memory, and obtain process-memory contents when the service accepts unauthenticated connections.

mitigation

Upgrade Hamlib to version 4.7.2 or later. Until upgraded, require rigctld authentication and restrict TCP port 4532 to trusted network sources.

check
available
exploit
no
automationDeterministic: a check that runs on its own, the same request on every target. Contextual: an agentic technique that needs to be applied per target, for bugs that depend on contextual flows.
deterministic
auth requiredWhether an attacker needs an account first, based on the CVSS vector's Privileges Required.
no
EPSSEstimate of the chance this CVE is exploited in the next 30 days. Refreshed daily.
–
agent run time
21m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-09-17 21:52Z
Δ to public pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).
−102d
Δ to kevAttacks confirmed in the real world.
–

outcome

Check only, differential: the check fires on the vulnerable build and is silent on the patched one.

source signals

Public signals that triggered or updated the pipeline. These are inputs for the deltas above.

  1. 2026-09-17 21:52Z
  2. 2026-09-17 21:52Z
  3. 2026-09-17 21:52Z

this entry in the feed

GET /api/v1/feed/CVE-2026-54634

{
  "etk_id": "ETK-2026-2702",
  "cve_id": "CVE-2026-54634",
  "display_id": "CVE-2026-54634",
  "ghsa_id": "GHSA-gpcq-c37x-pr46",
  "euvd_id": "EUVD-2026-82573",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Stack overflow and memory disclosure in Hamlib rigctld",
  "summary": "Hamlib rigctld versions before 4.7.2 contain a stack bounds error and an uninitialized-memory exposure in the send_raw command handler. An attacker able to reach the daemon can disrupt it, corrupt adjacent process memory, and obtain process-memory contents when the service accepts unauthenticated connections.",
  "mitigation": "Upgrade Hamlib to version 4.7.2 or later. Until upgraded, require rigctld authentication and restrict TCP port 4532 to trusted network sources.",
  "vendor": "other",
  "product": "other:Hamlib/Hamlib",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "5.0.0~git"
      ],
      "ecosystem": "other",
      "fixed_versions": [],
      "package_name": "Hamlib/Hamlib",
      "purl": null
    }
  ],
  "cwes": [
    787
  ],
  "cvss_score": 7.3,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": false,
  "pipeline_minutes": 20.626346183333332,
  "t0_at": "2026-09-17T21:52:51.132000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-26T23:18:57.211558+00:00",
      "days": 39.05979258747685,
      "is_lower_bound": false,
      "measured_at": "2026-09-17T21:52:51.132000+00:00",
      "url": null
    },
    "public_poc": {
      "at": "2026-06-07T23:12:45+00:00",
      "days": -101.94451541666666,
      "is_lower_bound": false,
      "measured_at": "2026-09-17T21:52:51.132000+00:00",
      "url": "https://github.com/Hamlib/Hamlib/security/advisories/GHSA-gpcq-c37x-pr46"
    },
    "trigger_signal": {
      "at": "2026-09-17T21:52:51.132000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-09-17T21:52:51.132000+00:00",
      "url": "https://github.com/Hamlib/Hamlib/security/advisories/GHSA-gpcq-c37x-pr46"
    }
  }
}

published 2026-10-26 22:58Z
last change 2026-10-27 03:55Z

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