CVE-2021-30471

mediumpriority · track · 22EPSS 0.007 · 54 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.73% (54th) EPSS

CVSS 4.3 · medium

Is it mine?

9 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

A flaw was found in PoDoFo 0.9.7. An uncontrolled recursive call in PdfNamesTree::AddToDictionary function in src/podofo/doc/PdfNamesTree.cpp can lead to a stack overflow.

cvss

Technical severity, 0–10. One row per scoring source.

5.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 2.9

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 3.6

v3.15.5mediumAV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.15.1mediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-674USprimaryCWE-674US

affected products (9)

Products and version ranges known to be affected.

n/a PoDoFo≤ PoDoFo 0.9.7enisa_euvdEU
Dominik Seichter et al. PoDoFo≤ 0.9.8fstec_bduRU
АО «ИВК» АЛЬТ СП 10all versionsfstec_bduRU
АО «ИВК» Альт 8 СПall versionsfstec_bduRU
ООО «РусБИТех-Астра» Astra Linux Special Edition≤ 1.7fstec_bduRU
ООО «РусБИТех-Астра» Astra Linux Special Edition≤ 4.7fstec_bduRU
fedoraproject fedora= 33nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
podofo project podofo= 0.9.7nvdUScpe:2.3:a:podofo_project:podofo:*:*:*:*:*:*:*:*
redhat enterprise linux= 7.0nvdUScpe:2.3:o:redhat:enterprise_linux:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2021-05-26modified 2026-06-17

related (725)

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+720 more

references (4)

External citations — patches, advisories, analysis.

https://bugzilla.redhat.com/show_bug.cgi?id=1947441 cnnvd
https://vigilance.fr/vulnerability/PoDoFo-denial-of-service-via-PdfNamesTree-AddToDictionary-46127 cnnvd
https://bugzilla.redhat.com/show_bug.cgi?id=1947441 enisa_euvd
https://bugzilla.redhat.com/show_bug.cgi?id=1947441ExploitIssue TrackingPatchThird Party Advisorynvd

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