CVE-2026-81997

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreHIGH confidence

Score 6.3 from GitHub Security Advisory published 2026-09-08. a secondary CVSS source baseline 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.3Exploit: None knownExposed: 0

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

Acrobat Reader is affected by an Incorrect Authorization vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to bypass security measures and gain unauthorized write access. Exploitation of this issue requires user interaction in that a victim must open a malicious file. Scope is changed.

CVSS v3
6.3
EG Score
6.3(high)
EG Risk
28(Track)
EG Risk 28/100SSVC: 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
Severity63% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

September 8, 2026

Last Modified

September 10, 2026

References (1)

Vendor Advisories for CVE-2026-81997(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 18× in last 7d / 49× 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. 2026-09-24 15:16 UTCEG score recompute
  2. 2026-09-24 15:16 UTCGHSA enrichment
  3. 2026-09-24 14:04 UTCEPSS rescore
  4. 2026-09-23 17:54 UTCEPSS rescore
  5. 2026-09-23 16:41 UTCGHSA enrichment
  6. 2026-09-22 18:24 UTCEG score recompute
  7. 2026-09-22 18:24 UTCGHSA enrichment
  8. 2026-09-22 16:01 UTCEPSS rescore
  9. 2026-09-21 21:09 UTCEPSS rescore
  10. 2026-09-21 20:07 UTCGHSA enrichment
  11. 2026-09-20 21:50 UTCEG score recompute
  12. 2026-09-20 21:50 UTCGHSA enrichment
  13. 2026-09-20 20:16 UTCEPSS rescore
  14. 2026-09-19 23:32 UTCEG score recompute
  15. 2026-09-19 23:32 UTCGHSA enrichment
  16. 2026-09-19 01:15 UTCEG score recompute
  17. 2026-09-19 01:15 UTCGHSA enrichment
  18. 2026-09-18 19:28 UTCEPSS rescore
  19. 2026-09-18 02:58 UTCEG score recompute
  20. 2026-09-18 02:58 UTCGHSA enrichment
  21. 2026-09-17 04:41 UTCEG score recompute
  22. 2026-09-17 04:41 UTCGHSA enrichment
  23. 2026-09-16 14:08 UTCEPSS rescore
  24. 2026-09-16 06:24 UTCEG score recompute
  25. 2026-09-16 06:24 UTCGHSA enrichment
Show 24 more
  1. 2026-09-16 05:15 UTCEPSS rescore
  2. 2026-09-15 08:07 UTCEG score recompute
  3. 2026-09-15 08:07 UTCGHSA enrichment
  4. 2026-09-15 03:12 UTCEPSS rescore
  5. 2026-09-15 03:12 UTCEPSS rescore
  6. 2026-09-14 09:50 UTCEG score recompute
  7. 2026-09-14 09:49 UTCGHSA enrichment
  8. 2026-09-13 11:29 UTCGHSA enrichment
  9. 2026-09-12 13:12 UTCGHSA enrichment
  10. 2026-09-11 14:55 UTCEG score recompute
  11. 2026-09-11 14:55 UTCGHSA enrichment
  12. 2026-09-11 14:53 UTCEPSS rescore
  13. 2026-09-11 14:53 UTCEPSS rescore
  14. 2026-09-10 16:38 UTCGHSA enrichment
  15. 2026-09-10 14:22 UTCEG score recompute
  16. 2026-09-10 14:22 UTCGHSA enrichment
  17. 2026-09-09 16:02 UTCGHSA enrichment
  18. 2026-09-09 14:30 UTCEG score recompute
  19. 2026-09-09 14:30 UTCGHSA enrichment
  20. 2026-09-09 13:37 UTCEG score recompute
  21. 2026-09-09 13:37 UTCGHSA enrichment
  22. 2026-09-08 21:33 UTCEG score recompute
  23. 2026-09-08 20:35 UTCEG score recompute
  24. 2026-09-08 20:34 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-81997?
CVE-2026-81997 is a medium vulnerability published on September 8, 2026. Acrobat Reader is affected by an Incorrect Authorization vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to bypass security measures and gain unauthorized write access. Exploitation of this issue requires user interaction in that a victim…
When was CVE-2026-81997 disclosed?
CVE-2026-81997 was first published in the National Vulnerability Database on September 8, 2026, with the most recent update on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-81997 actively exploited?
CVE-2026-81997 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 87.2% of all scored CVEs.
What is the CVSS score of CVE-2026-81997?
CVE-2026-81997 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-81997?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-81997, 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-2026-81997

Explore →

Is Your Infrastructure Affected by CVE-2026-81997?

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

Book a Demo →Browse All CVEs