CVE-2026-71392

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.7% (50th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 5.3Exploit: None knownExposed services: Not assessed

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

GNU Emacs for Android is vulnerable to an integer overflow in the sfnt_read_cmap_format_12() function in src/sfnt.c. When processing a crafted TrueType font file, an unguarded addition in the xmalloc allocation call wraps around on 32-bit builds, causing a heap buffer overflow write. An attacker can deliver a malicious font file via email, EWW (Emacs Web Wowser), or documents with custom faces, causing Emacs to load it. This results in heap memory corruption that can lead to code execution.

This issue was fixed in commit c4e20777c26548722a37b03db93243e83a0d6188

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100CISA SSVC

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
Severity53% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.7%
EPSS %ILE
50th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 10, 2026

Last Modified

August 28, 2026

Advisory Details (2)

Auto-updated Aug 10, 2026
No patch confirmed yet.
generic

GNU Emacs - GNU Project

https://www.gnu.org/savannah-checkouts/gnu/emacs/emacs.html
generic

Vulnerabilities in GNU Emacs software | CERT Polska

https://cert.pl/en/posts/2026/08/CVE-2026-71391

Vendor Advisories for CVE-2026-71392(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 15× in last 7d / 68× 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.

Showing the most recent 100 of 144 total refreshes for this CVE.

  1. 2026-10-05 07:55 UTCEG score recompute
  2. 2026-10-05 07:55 UTCGHSA enrichment
  3. 2026-10-04 23:22 UTCEPSS rescore
  4. 2026-10-04 05:36 UTCEG score recompute
  5. 2026-10-04 05:36 UTCGHSA enrichment
  6. 2026-10-03 14:26 UTCEPSS rescore
  7. 2026-10-02 17:56 UTCEPSS rescore
  8. 2026-10-02 09:25 UTCEG score recompute
  9. 2026-10-02 09:25 UTCGHSA enrichment
  10. 2026-10-01 19:50 UTCEPSS rescore
  11. 2026-09-30 22:48 UTCEG score recompute
  12. 2026-09-30 22:48 UTCGHSA enrichment
  13. 2026-09-30 15:03 UTCEPSS rescore
  14. 2026-09-29 05:27 UTCEG score recompute
  15. 2026-09-29 05:27 UTCGHSA enrichment
  16. 2026-09-28 13:52 UTCEPSS rescore
  17. 2026-09-27 17:00 UTCEG score recompute
  18. 2026-09-27 17:00 UTCGHSA enrichment
  19. 2026-09-27 13:48 UTCEPSS rescore
  20. 2026-09-26 15:59 UTCEPSS rescore
  21. 2026-09-25 04:07 UTCEG score recompute
  22. 2026-09-25 04:07 UTCGHSA enrichment
  23. 2026-09-24 00:16 UTCEG score recompute
  24. 2026-09-24 00:15 UTCGHSA enrichment
  25. 2026-09-23 17:54 UTCEPSS rescore
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  1. 2026-09-23 00:53 UTCEG score recompute
  2. 2026-09-23 00:53 UTCGHSA enrichment
  3. 2026-09-22 01:36 UTCEG score recompute
  4. 2026-09-22 01:36 UTCGHSA enrichment
  5. 2026-09-21 21:09 UTCEPSS rescore
  6. 2026-09-21 02:19 UTCEG score recompute
  7. 2026-09-21 02:19 UTCGHSA enrichment
  8. 2026-09-20 20:16 UTCEPSS rescore
  9. 2026-09-19 23:50 UTCEG score recompute
  10. 2026-09-19 23:50 UTCGHSA enrichment
  11. 2026-09-19 00:33 UTCEG score recompute
  12. 2026-09-19 00:33 UTCGHSA enrichment
  13. 2026-09-18 19:28 UTCEPSS rescore
  14. 2026-09-18 01:14 UTCEG score recompute
  15. 2026-09-18 01:14 UTCGHSA enrichment
  16. 2026-09-17 01:58 UTCEG score recompute
  17. 2026-09-17 01:58 UTCGHSA enrichment
  18. 2026-09-16 14:08 UTCEPSS rescore
  19. 2026-09-16 05:15 UTCEPSS rescore
  20. 2026-09-16 02:41 UTCEG score recompute
  21. 2026-09-16 02:41 UTCGHSA enrichment
  22. 2026-09-15 03:12 UTCEPSS rescore
  23. 2026-09-15 01:45 UTCGHSA enrichment
  24. 2026-09-14 02:28 UTCEG score recompute
  25. 2026-09-14 02:28 UTCGHSA enrichment
  26. 2026-09-13 03:11 UTCEG score recompute
  27. 2026-09-13 03:11 UTCGHSA enrichment
  28. 2026-09-12 15:02 UTCEPSS rescore
  29. 2026-09-12 03:54 UTCEG score recompute
  30. 2026-09-12 03:54 UTCGHSA enrichment
  31. 2026-09-11 14:53 UTCEPSS rescore
  32. 2026-09-11 04:36 UTCEG score recompute
  33. 2026-09-11 04:36 UTCGHSA enrichment
  34. 2026-09-10 09:35 UTCEPSS rescore
  35. 2026-09-10 05:17 UTCGHSA enrichment
  36. 2026-09-09 05:56 UTCEG score recompute
  37. 2026-09-09 05:56 UTCGHSA enrichment
  38. 2026-09-08 22:01 UTCEPSS rescore
  39. 2026-09-07 17:30 UTCEG score recompute
  40. 2026-09-07 17:30 UTCGHSA enrichment
  41. 2026-09-06 13:48 UTCEPSS rescore
  42. 2026-09-06 02:37 UTCEG score recompute
  43. 2026-09-06 02:37 UTCGHSA enrichment
  44. 2026-09-05 03:20 UTCEG score recompute
  45. 2026-09-05 03:20 UTCGHSA enrichment
  46. 2026-09-04 05:07 UTCEPSS rescore
  47. 2026-09-04 03:20 UTCGHSA enrichment
  48. 2026-09-03 03:51 UTCEG score recompute
  49. 2026-09-03 03:51 UTCGHSA enrichment
  50. 2026-09-02 14:12 UTCEPSS rescore
  51. 2026-09-01 21:56 UTCEG score recompute
  52. 2026-09-01 21:56 UTCGHSA enrichment
  53. 2026-09-01 13:54 UTCEPSS rescore
  54. 2026-08-31 22:20 UTCEG score recompute
  55. 2026-08-31 22:20 UTCGHSA enrichment
  56. 2026-08-30 19:17 UTCEPSS rescore
  57. 2026-08-30 15:03 UTCEG score recompute
  58. 2026-08-30 15:03 UTCGHSA enrichment
  59. 2026-08-30 01:22 UTCEPSS rescore
  60. 2026-08-29 15:45 UTCEG score recompute
  61. 2026-08-29 15:44 UTCGHSA enrichment
  62. 2026-08-28 21:42 UTCEPSS rescore
  63. 2026-08-28 15:57 UTCGHSA enrichment
  64. 2026-08-28 11:46 UTCEG score recompute
  65. 2026-08-28 11:46 UTCGHSA enrichment
  66. 2026-08-27 07:44 UTCEG score recompute
  67. 2026-08-27 07:44 UTCGHSA enrichment
  68. 2026-08-26 14:47 UTCEPSS rescore
  69. 2026-08-26 07:45 UTCEG score recompute
  70. 2026-08-26 07:45 UTCGHSA enrichment
  71. 2026-08-25 13:49 UTCEPSS rescore
  72. 2026-08-25 08:28 UTCEG score recompute
  73. 2026-08-25 08:28 UTCGHSA enrichment
  74. 2026-08-24 08:45 UTCGHSA enrichment
  75. 2026-08-23 09:28 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-71392?
CVE-2026-71392 is a medium vulnerability published on August 10, 2026. GNU Emacs for Android is vulnerable to an integer overflow in the sfntreadcmapformat12() function in src/sfnt.c. When processing a crafted TrueType font file, an unguarded addition in the xmalloc allocation call wraps around on 32-bit builds, causing a heap buffer overflow write. An attacker can…
When was CVE-2026-71392 disclosed?
CVE-2026-71392 was first published on August 10, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-71392 actively exploited?
CVE-2026-71392 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (50th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-71392?
CVE-2026-71392 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-71392?
No fix for CVE-2026-71392 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-71392 are linked in the Vendor Advisories panel on this page.

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