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Vulnerability details: VCID-13kb-u1tp-73fu
Vulnerability ID VCID-13kb-u1tp-73fu
Aliases BIT-pillow-2021-25288
CVE-2021-25288
GHSA-rwv7-3v45-hg29
PYSEC-2021-138
Summary An issue was discovered in Pillow before 8.2.0. There is an out-of-bounds read in J2kDecode, in j2ku_gray_i.
Status Published
Exploitability 0.5
Weighted Severity 8.2
Risk 4.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-125 Out-of-bounds Read
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 9.1 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-25288.json
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2021-25288
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 9.1 https://github.com/advisories/GHSA-rwv7-3v45-hg29
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-rwv7-3v45-hg29
generic_textual HIGH https://github.com/advisories/GHSA-rwv7-3v45-hg29
cvssv3.1 9.1 https://github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2021-138.yaml
generic_textual HIGH https://github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2021-138.yaml
cvssv3.1 9.1 https://github.com/python-pillow/Pillow
generic_textual HIGH https://github.com/python-pillow/Pillow
cvssv3.1 9.1 https://github.com/python-pillow/Pillow/commit/3bf5eddb89afdf690eceaa52bc4d3546ba9a5f87
generic_textual HIGH https://github.com/python-pillow/Pillow/commit/3bf5eddb89afdf690eceaa52bc4d3546ba9a5f87
cvssv3.1 9.1 https://github.com/python-pillow/Pillow/pull/5377#issuecomment-833821470
generic_textual HIGH https://github.com/python-pillow/Pillow/pull/5377#issuecomment-833821470
cvssv3.1 9.1 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL
generic_textual HIGH https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL
cvssv2 6.4 https://nvd.nist.gov/vuln/detail/CVE-2021-25288
cvssv3.1 9.1 https://nvd.nist.gov/vuln/detail/CVE-2021-25288
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2021-25288
cvssv3.1 9.1 https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-25287-cve-2021-25288-fix-oob-read-in-jpeg2kdecode
generic_textual HIGH https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-25287-cve-2021-25288-fix-oob-read-in-jpeg2kdecode
cvssv3.1 9.1 https://security.gentoo.org/glsa/202107-33
generic_textual HIGH https://security.gentoo.org/glsa/202107-33
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-25288.json
https://api.first.org/data/v1/epss?cve=CVE-2021-25288
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25288
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/advisories/GHSA-rwv7-3v45-hg29
https://github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2021-138.yaml
https://github.com/python-pillow/Pillow
https://github.com/python-pillow/Pillow/commit/3bf5eddb89afdf690eceaa52bc4d3546ba9a5f87
https://github.com/python-pillow/Pillow/pull/5377#issuecomment-833821470
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL/
https://nvd.nist.gov/vuln/detail/CVE-2021-25288
https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-25287-cve-2021-25288-fix-oob-read-in-jpeg2kdecode
https://security.gentoo.org/glsa/202107-33
1958231 https://bugzilla.redhat.com/show_bug.cgi?id=1958231
989062 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=989062
cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
RHSA-2021:4149 https://access.redhat.com/errata/RHSA-2021:4149
USN-4963-1 https://usn.ubuntu.com/4963-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-25288.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: 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: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Found at https://github.com/advisories/GHSA-rwv7-3v45-hg29
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: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Found at https://github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2021-138.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: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Found at https://github.com/python-pillow/Pillow
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: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Found at https://github.com/python-pillow/Pillow/commit/3bf5eddb89afdf690eceaa52bc4d3546ba9a5f87
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: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Found at https://github.com/python-pillow/Pillow/pull/5377#issuecomment-833821470
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: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Found at https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL
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: AV:N/AC:L/Au:N/C:P/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2021-25288
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-25288
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: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Found at https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-25287-cve-2021-25288-fix-oob-read-in-jpeg2kdecode
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: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Found at https://security.gentoo.org/glsa/202107-33
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
Exploit Prediction Scoring System (EPSS)
Percentile 0.42885
EPSS Score 0.00204
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:16:22.035267+00:00 Pypa Importer Import https://github.com/pypa/advisory-database/blob/main/vulns/pillow/PYSEC-2021-138.yaml 37.0.0