SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2026-5941

Parsing logic flaws cause non-signature data to be misidentified as valid signatures when processing malformed form field hierarchies, leading to invalid memory writes and program crashes during internal data structure construction.

HIGH 7.1EPSS 0.17%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.17%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Parsing logic flaws cause non-signature data to be misidentified as valid signatures when processing malformed form field hierarchies, leading to invalid memory writes and program crashes during internal data structure construction.

CVSS 3.1
7.1 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
EPSS
0.17% probability · 7th percentile
CISA KEV
Not listed
Weakness
CWE-20
Affected
foxit/pdf editor · foxit/pdf reader
Source
14984358-7092-470d-8f34-ade47a7658a2

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.