CVE-2026-71393

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: 0.4%, top 68% of all CVEs by exploit prediction. 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%CVSS: 5.3Exploit: None knownExposed: 0

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

GNU Emacs for Android is vulnerable to an integer overflow in sfnt_read_name_table() in src/sfnt.c. The function computes an allocation size using a 32-bit length value from a TrueType font file without overflow checking. On 32-bit targets, a crafted font causes the calculation to wrap, resulting in an undersized heap allocation. A subsequent read() call writes beyond the buffer, causing a heap buffer overflow. 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 can lead to heap memory corruption and potential code execution.

This issue was fixed in commit d51a4722316efe0960994d371e1859099894d1ca

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity53% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
32%
KEV
Not listed

Published

August 10, 2026

Last Modified

August 10, 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-2026-71393(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 25× in last 7d / 39× 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. 2026-08-21 04:10 UTCEG score recompute
  2. 2026-08-21 04:10 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 05:29 UTCEG score recompute
  5. 2026-08-20 05:29 UTCGHSA enrichment
  6. 2026-08-19 17:04 UTCEPSS rescore
  7. 2026-08-19 06:47 UTCEG score recompute
  8. 2026-08-19 06:47 UTCGHSA enrichment
  9. 2026-08-18 13:49 UTCEPSS rescore
  10. 2026-08-18 13:49 UTCEPSS rescore
  11. 2026-08-18 07:57 UTCEG score recompute
  12. 2026-08-18 07:57 UTCGHSA enrichment
  13. 2026-08-17 13:47 UTCEPSS rescore
  14. 2026-08-17 09:16 UTCEG score recompute
  15. 2026-08-17 09:16 UTCGHSA enrichment
  16. 2026-08-16 14:56 UTCEPSS rescore
  17. 2026-08-16 14:56 UTCEPSS rescore
  18. 2026-08-16 10:34 UTCEG score recompute
  19. 2026-08-16 10:34 UTCGHSA enrichment
  20. 2026-08-16 02:15 UTCEPSS rescore
  21. 2026-08-15 11:53 UTCEG score recompute
  22. 2026-08-15 11:53 UTCGHSA enrichment
  23. 2026-08-15 01:31 UTCEPSS rescore
  24. 2026-08-14 13:11 UTCEG score recompute
  25. 2026-08-14 13:11 UTCGHSA enrichment
Show 14 more
  1. 2026-08-13 22:00 UTCEPSS rescore
  2. 2026-08-13 14:29 UTCGHSA enrichment
  3. 2026-08-12 15:48 UTCEG score recompute
  4. 2026-08-12 15:48 UTCGHSA enrichment
  5. 2026-08-12 13:51 UTCEPSS rescore
  6. 2026-08-11 17:07 UTCEG score recompute
  7. 2026-08-11 17:06 UTCGHSA enrichment
  8. 2026-08-10 18:25 UTCEG score recompute
  9. 2026-08-10 18:25 UTCGHSA enrichment
  10. 2026-08-10 17:55 UTCEG score recompute
  11. 2026-08-10 17:55 UTCGHSA enrichment
  12. 2026-08-10 11:20 UTCEG score recompute
  13. 2026-08-10 10:31 UTCEG score recompute
  14. 2026-08-10 10:31 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-71393?
CVE-2026-71393 is a medium vulnerability published on August 10, 2026. GNU Emacs for Android is vulnerable to an integer overflow in sfntreadname_table() in src/sfnt.c. The function computes an allocation size using a 32-bit length value from a TrueType font file without overflow checking. On 32-bit targets, a crafted font causes the calculation to wrap, resulting in…
When was CVE-2026-71393 disclosed?
CVE-2026-71393 was first published in the National Vulnerability Database on August 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-71393 actively exploited?
CVE-2026-71393 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 67.6% of all scored CVEs.
What is the CVSS score of CVE-2026-71393?
CVE-2026-71393 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-71393?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-71393, 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-2026-71393

Explore →

Is Your Infrastructure Affected by CVE-2026-71393?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs