CVE-2026-81977

Acrobat Reader | Integer Underflow (Wrap or Wraparound) (CWE-191)

At a glance

Severity: MEDIUM 5.5
EPSS: EPSS 0.26 % · percentile 18 (2026-10-28)
State: PUBLISHED
Published: 2026-09-08
Updated: 2026-09-11
Assigner: adobe
NVD status: Analyzed

Description

Acrobat Reader is affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to disclose sensitive information. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 5.5	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N	adobe
CVSS 3.1	MEDIUM 5.5	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N	NVD · psirt@adobe.com (Secondary)

Weaknesses (CWE)

CWE-191

European references

ENISA EUVD · EUVD-2026-74102
GCVE · GCVE-0-2026-81977

CERT-FR advisories

CERTFR-2026-AVI-1140 — Multiples vulnérabilités dans les produits Adobe · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:* ≥ 24.001.20604 < 24.001.30429
cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:* ≥ 15.008.20082 < 26.002.21901
cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:* ≥ 15.008.20082 < 26.002.21901

Affected products

Product	Versions
Adobe · Adobe Acrobat	affected 0 ≤ 26.002.21900 ; unaffected 26.002.21901
Adobe · Acrobat Reader	affected 0 ≤ 26.002.21900 ; unaffected 26.002.21901
Adobe · Acrobat 2024	affected 0 ≤ 24.001.30383 ; unaffected 24.001.30429

References

https://helpx.adobe.com/security/products/acrobat/apsb26-141.html

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD