01 Record

CVE-2026-59112

Signature validation vulnerability affecting DigiDoc applications

MediumPUBLISHEDCNA: ENISA

CNA base score4.4 CVSS v4.0CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P

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02 Description

Signature validation vulnerability affecting DigiDoc applications

03 Exploitation and scoring

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.11% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 1.7% of scored records. A rank, not a probability.

NVD base score

4.4 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-09-01.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-08-10 13:57Z25 DAYS AGO

Last updated

2026-08-10 17:55Z25 DAYS AGO

Reserved

2026-07-02

Assigning CNA

ENISA

Record state

PUBLISHED

Severity

Medium (CVSS 4.4)

CNA CVSS vector

CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P

Weaknesses

CWE-347Improper Verification of Cryptographic SignatureBase
CWE-754Improper Check for Unusual or Exceptional ConditionsClass

Data version

5.2

Document digest

e26d189cab66d4128a509114664885fc8537966fbab8ec12b23ad576f27a8669

05 Affected products

VendorProductVersionsPlatforms

Estonian Information System Authority (RIA)libdigidocpp4.1.0 to < 4.2.1—

Estonian Information System Authority (RIA)DigiDoc44.7.0 to < 4.8.2—

Estonian Information System Authority (RIA)DigiDoc2.7.0 to < 2.7.2, 2.8.0 to < 2.8.1Android, iOS

06 References

github.comhttps://github.com/open-eid/libdigidocpp/pull/690patch
www.id.eehttps://www.id.ee/en/article/ria-soovitab-kasutajatel-uuendada-id-tarkvara-eng/vendor-advisory
www.ria.eehttps://www.ria.ee/blogi/digidoc-rakendustes-esinenud-turvanorkus-mis-juhtus-ja-kuidas-see-parandatigovernment-resource

07 Remediation

Systems integrating libdigidocpp should update to version 4.2.1 or later. Users of DigiDoc applications should update to fixed versions provided by the vendor: DigiDoc4 - 4.8.2 or later, RIA DigiDoc Android - 2.7.2 or later, and RIA DigiDoc iOS - 2.8.1 or later. Signatures that were validated with the vulnerable software versions should be revalidated.

01 Record index

CVE-2026-59112

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

07 Remediation

02 Records

CVE-2026-59112

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

07 Remediation