A vulnerability was determined in llvm llvm-project up to 22.1.6. This impacts the function GCRelocateInst::getBasePtr in the library llvm/lib/IR/IntrinsicInst.cpp of the component Bitcode File Handler. This manipulation causes heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.
CVE-2026-13574
LOWPre-NVD 3.33.3—Trending — 4 sources updated this week
EchelonGraph scoreHIGH confidence
Score 3.3 from GitHub Security Advisory (severity: LOW) published 2026-06-29. a secondary CVSS source baseline 3.3; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
3.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 3.3Exploit: NoneExposed: 0
A fix is available — apply it.
- CVSS v3
- 3.3
- EG Score
- 3.3(high)
- EPSS
- 2.5%
- KEV
- Not listed
Published
June 29, 2026
Last Modified
July 1, 2026
References (8)
- cna@vuldbhttps://github.com/llvm/llvm-project/
- cna@vuldbhttps://github.com/llvm/llvm-project/issues/199191
- cna@vuldbhttps://github.com/user-attachments/files/28142619/poc.zip
- cna@vuldbhttps://vuldb.com/cve/CVE-2026-13574
- cna@vuldbhttps://vuldb.com/submit/844468
- cna@vuldbhttps://vuldb.com/vuln/374582
- cna@vuldbhttps://vuldb.com/vuln/374582/cti
- 134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/llvm/llvm-project/issues/199191
Vendor Advisories for CVE-2026-13574(3)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- GHSA-pf97-7r98-qpj7GitHub Security AdvisoriesLow
A vulnerability was determined in llvm llvm-project up to 22.1.6. This impacts the function...
- RHSA-2026:24069Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
- RHSA-2026:7634Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Patch Availability(2)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| redhat | llvm21-main-21.1.8-6.hum1 | 2026-06-07 | redhat |
| redhat | llvm-main-21.1.8-1.1.hum1 | 2026-04-11 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 11× in last 7d / 14× 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.
- 2026-07-06 16:27 UTCEPSS rescore
- 2026-07-06 02:23 UTCEPSS rescore
- 2026-07-05 07:30 UTCEG score recompute
- 2026-07-05 07:30 UTCVendor advisory
- 2026-07-05 07:30 UTCGHSA enrichment
- 2026-07-05 02:30 UTCEPSS rescore
- 2026-07-05 02:30 UTCEPSS rescore
- 2026-07-04 06:31 UTCEPSS rescore
- 2026-07-02 11:09 UTCEG score recompute
- 2026-07-02 11:09 UTCGHSA enrichment
- 2026-06-30 23:22 UTCEPSS rescore
- 2026-06-29 15:26 UTCNVD updateCVSS v4 → 1.9
- 2026-06-29 14:52 UTCEG score recompute
- 2026-06-29 14:52 UTCMITRE cvelistV5first tracked
Frequently asked(5)
What is CVE-2026-13574?
CVE-2026-13574 is a low vulnerability published on June 29, 2026. A vulnerability was determined in llvm llvm-project up to 22.1.6. This impacts the function GCRelocateInst::getBasePtr in the library llvm/lib/IR/IntrinsicInst.cpp of the component Bitcode File Handler. This manipulation causes heap-based buffer overflow. It is possible to launch the attack on the…
When was CVE-2026-13574 disclosed?
CVE-2026-13574 was first published in the National Vulnerability Database on June 29, 2026, with the most recent update on July 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-13574 actively exploited?
CVE-2026-13574 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-13574?
CVE-2026-13574 has a CVSS v3 base score of 3.3 (NVD).
How do I remediate CVE-2026-13574?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-13574, 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-2026-13574
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