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Vulnerability details: VCID-b5ac-bsqm-qkf4
Vulnerability ID VCID-b5ac-bsqm-qkf4
Aliases CVE-2021-36978
Summary
Status Published
Exploitability 0.5
Weighted Severity 7.0
Risk 3.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
System Score Found at
cvssv3 7.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-36978.json
epss 0.00079 https://api.first.org/data/v1/epss?cve=CVE-2021-36978
epss 0.00079 https://api.first.org/data/v1/epss?cve=CVE-2021-36978
epss 0.00079 https://api.first.org/data/v1/epss?cve=CVE-2021-36978
ssvc Track https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28262
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
ssvc Track https://github.com/google/oss-fuzz-vulns/blob/main/vulns/qpdf/OSV-2020-2245.yaml
ssvc Track https://github.com/qpdf/qpdf/commit/dc92574c10f3e2516ec6445b88c5d584f40df4e5
ssvc Track https://github.com/qpdf/qpdf/issues/492
ssvc Track https://lists.debian.org/debian-lts-announce/2023/08/msg00037.html
ssvc Track https://security.gentoo.org/glsa/202401-20
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-36978.json
https://api.first.org/data/v1/epss?cve=CVE-2021-36978
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36978
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
1984609 https://bugzilla.redhat.com/show_bug.cgi?id=1984609
202401-20 https://security.gentoo.org/glsa/202401-20
492 https://github.com/qpdf/qpdf/issues/492
dc92574c10f3e2516ec6445b88c5d584f40df4e5 https://github.com/qpdf/qpdf/commit/dc92574c10f3e2516ec6445b88c5d584f40df4e5
detail?id=28262 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28262
msg00037.html https://lists.debian.org/debian-lts-announce/2023/08/msg00037.html
OSV-2020-2245.yaml https://github.com/google/oss-fuzz-vulns/blob/main/vulns/qpdf/OSV-2020-2245.yaml
USN-5026-1 https://usn.ubuntu.com/5026-1/
USN-5026-2 https://usn.ubuntu.com/5026-2/
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-36978.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-10-15T17:09:38Z/ Found at https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28262
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-10-15T17:09:38Z/ Found at https://github.com/google/oss-fuzz-vulns/blob/main/vulns/qpdf/OSV-2020-2245.yaml
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-10-15T17:09:38Z/ Found at https://github.com/qpdf/qpdf/commit/dc92574c10f3e2516ec6445b88c5d584f40df4e5
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-10-15T17:09:38Z/ Found at https://github.com/qpdf/qpdf/issues/492
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-10-15T17:09:38Z/ Found at https://lists.debian.org/debian-lts-announce/2023/08/msg00037.html
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-10-15T17:09:38Z/ Found at https://security.gentoo.org/glsa/202401-20
Exploit Prediction Scoring System (EPSS)
Percentile 0.23468
EPSS Score 0.00079
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-10T18:08:11.456230+00:00 SUSE Severity Score Importer Import https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml 38.6.0