CVE-2026-81994

HIGHNVD 6.38.2▲
EchelonGraph scoreMEDIUM confidence

Score 8.2 from GitHub Security Advisory (severity: HIGH) published 2026-09-08. NVD baseline CVSS 6.3; sources differ by 1.9.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
8.2EG
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 Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability that could lead to arbitrary file system read. An attacker could exploit this vulnerability to access sensitive files and directories outside the intended access scope. 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
8.2(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity82% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
23%
KEV
Not listed

Published

September 8, 2026

Last Modified

September 10, 2026

References (1)

Vendor Advisories for CVE-2026-81994(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 26× 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. 2026-09-19 17:01 UTCEG score recompute
  2. 2026-09-19 17:00 UTCGHSA enrichment
  3. 2026-09-19 05:49 UTCEG score recompute
  4. 2026-09-19 05:49 UTCGHSA enrichment
  5. 2026-09-18 19:28 UTCEPSS rescore
  6. 2026-09-18 18:38 UTCGHSA enrichment
  7. 2026-09-18 07:27 UTCGHSA enrichment
  8. 2026-09-17 20:16 UTCEG score recompute
  9. 2026-09-17 20:16 UTCGHSA enrichment
  10. 2026-09-17 05:26 UTCGHSA enrichment
  11. 2026-09-16 18:15 UTCEG score recompute
  12. 2026-09-16 18:15 UTCGHSA enrichment
  13. 2026-09-16 14:08 UTCEPSS rescore
  14. 2026-09-16 05:36 UTCEG score recompute
  15. 2026-09-16 05:36 UTCGHSA enrichment
  16. 2026-09-16 05:15 UTCEPSS rescore
  17. 2026-09-15 18:26 UTCGHSA enrichment
  18. 2026-09-15 07:15 UTCEG score recompute
  19. 2026-09-15 07:15 UTCGHSA enrichment
  20. 2026-09-15 03:12 UTCEPSS rescore
  21. 2026-09-15 03:12 UTCEPSS rescore
  22. 2026-09-14 20:04 UTCGHSA enrichment
  23. 2026-09-14 08:52 UTCGHSA enrichment
  24. 2026-09-13 21:41 UTCEG score recompute
  25. 2026-09-13 21:41 UTCGHSA enrichment
Show 24 more
  1. 2026-09-13 10:30 UTCGHSA enrichment
  2. 2026-09-12 23:19 UTCEG score recompute
  3. 2026-09-12 23:19 UTCGHSA enrichment
  4. 2026-09-12 12:08 UTCGHSA enrichment
  5. 2026-09-12 00:57 UTCEG score recompute
  6. 2026-09-12 00:57 UTCGHSA enrichment
  7. 2026-09-11 14:53 UTCEPSS rescore
  8. 2026-09-11 14:53 UTCEPSS rescore
  9. 2026-09-11 13:46 UTCEG score recompute
  10. 2026-09-11 13:46 UTCGHSA enrichment
  11. 2026-09-11 02:35 UTCGHSA enrichment
  12. 2026-09-10 15:24 UTCGHSA enrichment
  13. 2026-09-10 15:01 UTCEG score recompute
  14. 2026-09-10 15:01 UTCGHSA enrichment
  15. 2026-09-10 13:21 UTCEG score recompute
  16. 2026-09-10 13:21 UTCGHSA enrichment
  17. 2026-09-10 13:19 UTCNVD updateCVSS v3 → 6.3 · severity → MEDIUM
  18. 2026-09-10 03:13 UTCGHSA enrichment
  19. 2026-09-09 16:02 UTCGHSA enrichment
  20. 2026-09-09 08:44 UTCEG score recompute
  21. 2026-09-09 08:44 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

Frequently asked(5)

What is CVE-2026-81994?
CVE-2026-81994 is a high vulnerability published on September 8, 2026. Acrobat Reader is affected by an Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability that could lead to arbitrary file system read. An attacker could exploit this vulnerability to access sensitive files and directories outside the intended access…
When was CVE-2026-81994 disclosed?
CVE-2026-81994 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-2026-81994 actively exploited?
CVE-2026-81994 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 76.6% of all scored CVEs.
What is the CVSS score of CVE-2026-81994?
CVE-2026-81994 has a CVSS v3 base score of 6.3 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 8.2.
How do I remediate CVE-2026-81994?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-81994, 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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