CVE-2026-41992

HIGHNVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory published 2026-06-29. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

A fix is available — apply it.

GNU gzip contains a global buffer overflow vulnerability in the LZH decompression logic caused by improper reuse of shared global state between different decompression formats within a single execution. GNU gzip maintains a global array that is shared across the LZ77, LZW, and LZH decompression routines and is not reinitialized between files processed in the same invocation. By decompressing a specially crafted LZW file followed by a specially crafted LZH file in a single gzip -d command, an attacker can poison the shared global state and subsequently trigger an out‑of‑bounds read in the LZH decoder. The LZH decompression logic follows stale values left in the shared array, causing reads past the end of the allocated global buffer.

This issue has been fixed in the commit 63dbf6b3b9e6e781df1a6a64e609b10e23969681

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
21.6%
KEV
Not listed

Published

June 29, 2026

Last Modified

July 1, 2026

Advisory Details (2)

Auto-updated Jun 29, 2026
No patch confirmed yet.
generic

gzip: don’t mishandle .lzh after .Z - gzip.git - gzip

https://cgit.git.savannah.gnu.org/cgit/gzip.git/commit/?id=63dbf6b3b9e6e781df1a6a64e609b10e23969681
generic

Gzip - GNU Project - Free Software Foundation

https://www.gnu.org/software/gzip/

Vendor Advisories for CVE-2026-41992(2)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntugzip-win32 (1.12-1ubuntu3.2) @ noble2026-07-17ubuntu

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(1)

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

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 9× in last 7d / 97× 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. 2026-07-23 14:18 UTCEPSS rescore
  2. 2026-07-23 03:11 UTCEG score recompute
  3. 2026-07-22 14:08 UTCEPSS rescore
  4. 2026-07-20 17:08 UTCEPSS rescore
  5. 2026-07-19 14:31 UTCEPSS rescore
  6. 2026-07-19 02:29 UTCEPSS rescore
  7. 2026-07-18 10:04 UTCEPSS rescore
  8. 2026-07-17 02:15 UTCVendor advisory
  9. 2026-07-17 02:15 UTCGHSA enrichment
  10. 2026-07-16 17:03 UTCEPSS rescore
  11. 2026-07-16 14:56 UTCVendor advisory
  12. 2026-07-16 14:56 UTCGHSA enrichment
  13. 2026-07-16 03:39 UTCVendor advisory
  14. 2026-07-16 03:39 UTCGHSA enrichment
  15. 2026-07-15 16:57 UTCEPSS rescore
  16. 2026-07-15 16:24 UTCVendor advisory
  17. 2026-07-15 16:24 UTCGHSA enrichment
  18. 2026-07-15 05:09 UTCVendor advisory
  19. 2026-07-15 05:09 UTCGHSA enrichment
  20. 2026-07-15 02:00 UTCEPSS rescore
  21. 2026-07-14 17:30 UTCVendor advisory
  22. 2026-07-14 17:30 UTCGHSA enrichment
  23. 2026-07-14 06:15 UTCVendor advisory
  24. 2026-07-14 06:15 UTCGHSA enrichment
  25. 2026-07-13 22:30 UTCEPSS rescore
Show 72 more
  1. 2026-07-13 18:59 UTCVendor advisory
  2. 2026-07-13 18:59 UTCGHSA enrichment
  3. 2026-07-13 07:44 UTCVendor advisory
  4. 2026-07-13 07:44 UTCGHSA enrichment
  5. 2026-07-13 06:13 UTCEPSS rescore
  6. 2026-07-13 06:13 UTCEPSS rescore
  7. 2026-07-12 20:29 UTCVendor advisory
  8. 2026-07-12 20:29 UTCGHSA enrichment
  9. 2026-07-12 09:14 UTCVendor advisory
  10. 2026-07-12 09:14 UTCGHSA enrichment
  11. 2026-07-12 05:46 UTCEPSS rescore
  12. 2026-07-11 21:59 UTCVendor advisory
  13. 2026-07-11 21:59 UTCGHSA enrichment
  14. 2026-07-11 10:44 UTCVendor advisory
  15. 2026-07-11 10:44 UTCGHSA enrichment
  16. 2026-07-11 08:27 UTCEPSS rescore
  17. 2026-07-10 23:29 UTCVendor advisory
  18. 2026-07-10 23:29 UTCGHSA enrichment
  19. 2026-07-10 12:13 UTCVendor advisory
  20. 2026-07-10 12:13 UTCGHSA enrichment
  21. 2026-07-10 00:57 UTCVendor advisory
  22. 2026-07-10 00:57 UTCGHSA enrichment
  23. 2026-07-09 19:10 UTCEPSS rescore
  24. 2026-07-09 13:41 UTCVendor advisory
  25. 2026-07-09 13:41 UTCGHSA enrichment
  26. 2026-07-09 02:26 UTCVendor advisory
  27. 2026-07-09 02:26 UTCGHSA enrichment
  28. 2026-07-08 15:15 UTCEPSS rescore
  29. 2026-07-08 15:11 UTCVendor advisory
  30. 2026-07-08 15:11 UTCGHSA enrichment
  31. 2026-07-08 03:54 UTCVendor advisory
  32. 2026-07-08 03:54 UTCGHSA enrichment
  33. 2026-07-07 16:39 UTCVendor advisory
  34. 2026-07-07 16:39 UTCGHSA enrichment
  35. 2026-07-07 13:46 UTCEPSS rescore
  36. 2026-07-07 05:17 UTCVendor advisory
  37. 2026-07-07 05:17 UTCGHSA enrichment
  38. 2026-07-06 18:02 UTCVendor advisory
  39. 2026-07-06 18:02 UTCGHSA enrichment
  40. 2026-07-06 16:27 UTCEPSS rescore
  41. 2026-07-06 16:27 UTCEPSS rescore
  42. 2026-07-06 06:34 UTCVendor advisory
  43. 2026-07-06 06:34 UTCGHSA enrichment
  44. 2026-07-06 02:23 UTCEPSS rescore
  45. 2026-07-06 02:23 UTCEPSS rescore
  46. 2026-07-05 19:19 UTCVendor advisory
  47. 2026-07-05 19:19 UTCGHSA enrichment
  48. 2026-07-05 08:04 UTCVendor advisory
  49. 2026-07-05 08:04 UTCGHSA enrichment
  50. 2026-07-05 02:30 UTCEPSS rescore
  51. 2026-07-04 20:40 UTCVendor advisory
  52. 2026-07-04 20:40 UTCGHSA enrichment
  53. 2026-07-04 09:24 UTCVendor advisory
  54. 2026-07-04 09:24 UTCGHSA enrichment
  55. 2026-07-04 06:31 UTCEPSS rescore
  56. 2026-07-03 22:09 UTCVendor advisory
  57. 2026-07-03 22:09 UTCGHSA enrichment
  58. 2026-07-03 10:54 UTCVendor advisory
  59. 2026-07-03 10:54 UTCGHSA enrichment
  60. 2026-07-02 23:37 UTCVendor advisory
  61. 2026-07-02 23:37 UTCGHSA enrichment
  62. 2026-07-02 12:23 UTCEG score recompute▲ 0.60
  63. 2026-07-02 12:23 UTCVendor advisory
  64. 2026-07-02 12:23 UTCGHSA enrichment
  65. 2026-07-02 01:21 UTCNVD updateCVSS v3 → 7.5 · severity → HIGH
  66. 2026-07-01 15:06 UTCEPSS rescore
  67. 2026-07-01 12:17 UTCVendor advisory
  68. 2026-07-01 12:17 UTCGHSA enrichment
  69. 2026-06-30 23:22 UTCEPSS rescore
  70. 2026-06-30 12:08 UTCGHSA enrichment
  71. 2026-06-29 12:02 UTCEG score recompute
  72. 2026-06-29 12:02 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-41992?
CVE-2026-41992 is a high vulnerability published on June 29, 2026. GNU gzip contains a global buffer overflow vulnerability in the LZH decompression logic caused by improper reuse of shared global state between different decompression formats within a single execution. GNU gzip maintains a global array that is shared across the LZ77, LZW, and LZH decompression…
When was CVE-2026-41992 disclosed?
CVE-2026-41992 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-2026-41992 actively exploited?
CVE-2026-41992 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 21.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-41992?
CVE-2026-41992 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-41992?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-41992, 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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