CVE-2026-29009

HIGHPre-NVD 8.28.2—
EchelonGraph scoreHIGH confidence

Score 8.2 from GitHub Security Advisory (severity: HIGH) published 2026-07-08. a secondary CVSS source baseline 8.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.2
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.2Exploit: NoneExposed: 0

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

U-Boot through 2026.04-rc3 contains a buffer overflow vulnerability in nfs_readlink_reply() (net/nfs-common.c) when CONFIG_CMD_NFS is enabled, allowing a malicious or compromised NFS server to overflow the 2048-byte nfs_path_buff buffer by returning multiple relative symlink targets that are appended without cumulative length validation. Attackers can send two or more READLINK responses containing relative symlink targets of approximately 1100 bytes each to corrupt adjacent BSS variables including nfs_server_ip, nfs_server_mount_port, nfs_server_port, nfs_our_port, nfs_state, and rpc_id, potentially achieving memory corruption and control over the NFS client state machine.

CVSS v3
8.2
EG Score
8.2(high)
EPSS
35.4%
KEV
Not listed

Published

July 8, 2026

Last Modified

July 14, 2026

Advisory Details (3)

Auto-updated Jul 8, 2026
No patch confirmed yet.
generic

U-Boot 2026.04-rc3 Buffer Overflow in nfs_readlink_reply() via NFS READLINK | Advisories | VulnCheck

https://www.vulncheck.com/advisories/u-boot-rc3-buffer-overflow-in-nfs-readlink-reply-via-nfs-readlink
generic

Das U-Boot: The Universal Boot Loader

https://u-boot.org/
generic

Coordinated Vulnerability Disclosure - U-Boot Multiple Vulnerabilities (3)

https://lists.denx.de/pipermail/u-boot/2026-May/617853.html

Vendor Advisories for CVE-2026-29009(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 40× in last 7d / 42× 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. 2026-07-15 18:03 UTCEG score recompute
  2. 2026-07-15 18:03 UTCGHSA enrichment
  3. 2026-07-15 16:57 UTCEPSS rescore
  4. 2026-07-15 16:57 UTCEPSS rescore
  5. 2026-07-15 06:43 UTCEG score recompute
  6. 2026-07-15 06:43 UTCGHSA enrichment
  7. 2026-07-15 02:00 UTCEPSS rescore
  8. 2026-07-15 02:00 UTCEPSS rescore
  9. 2026-07-14 19:25 UTCEG score recompute
  10. 2026-07-14 19:25 UTCGHSA enrichment
  11. 2026-07-14 08:07 UTCEG score recompute
  12. 2026-07-14 08:07 UTCGHSA enrichment
  13. 2026-07-13 22:30 UTCEPSS rescore
  14. 2026-07-13 20:49 UTCEG score recompute
  15. 2026-07-13 20:49 UTCGHSA enrichment
  16. 2026-07-13 09:31 UTCEG score recompute
  17. 2026-07-13 09:31 UTCGHSA enrichment
  18. 2026-07-13 06:13 UTCEPSS rescore
  19. 2026-07-13 06:13 UTCEPSS rescore
  20. 2026-07-12 22:13 UTCEG score recompute
  21. 2026-07-12 22:13 UTCGHSA enrichment
  22. 2026-07-12 10:55 UTCEG score recompute
  23. 2026-07-12 10:55 UTCGHSA enrichment
  24. 2026-07-12 05:46 UTCEPSS rescore
  25. 2026-07-11 23:37 UTCEG score recompute
Show 17 more
  1. 2026-07-11 23:37 UTCGHSA enrichment
  2. 2026-07-11 12:19 UTCEG score recompute
  3. 2026-07-11 12:19 UTCGHSA enrichment
  4. 2026-07-11 08:27 UTCEPSS rescore
  5. 2026-07-11 01:01 UTCEG score recompute
  6. 2026-07-11 01:01 UTCGHSA enrichment
  7. 2026-07-10 13:42 UTCEG score recompute
  8. 2026-07-10 13:42 UTCGHSA enrichment
  9. 2026-07-10 02:23 UTCEG score recompute
  10. 2026-07-10 02:23 UTCGHSA enrichment
  11. 2026-07-09 19:10 UTCEPSS rescore
  12. 2026-07-09 15:05 UTCEG score recompute
  13. 2026-07-09 15:05 UTCGHSA enrichment
  14. 2026-07-09 03:42 UTCEG score recompute
  15. 2026-07-09 03:42 UTCGHSA enrichment
  16. 2026-07-08 16:24 UTCEG score recompute
  17. 2026-07-08 16:24 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-29009?
CVE-2026-29009 is a high vulnerability published on July 8, 2026. U-Boot through 2026.04-rc3 contains a buffer overflow vulnerability in nfsreadlinkreply() (net/nfs-common.c) when CONFIGCMDNFS is enabled, allowing a malicious or compromised NFS server to overflow the 2048-byte nfspathbuff buffer by returning multiple relative symlink targets that are appended…
When was CVE-2026-29009 disclosed?
CVE-2026-29009 was first published in the National Vulnerability Database on July 8, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-29009 actively exploited?
CVE-2026-29009 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 35.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-29009?
CVE-2026-29009 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-29009?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-29009, 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

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