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01 Record

CVE-2021-22570

Nullptr Dereference in Protobuf

MediumPUBLISHEDCNA: Google
CNA base score6.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
View raw JSON

02 Description

Nullptr Dereference in Protobuf

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • 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
2.66% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 85.4% of scored records. A rank, not a probability.
NVD base score
5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

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
2022-01-26 00:00Z4 YR AGO
Last updated
2025-04-21 13:56Z1 YR AGO
Reserved
2021-01-05
Assigning CNA
Google
Record state
PUBLISHED
Severity
Medium (CVSS 6.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-476NULL Pointer DereferenceBase
Data version
5.1
Document digest
196de3888e273ee2b25ce087778452ea6ceb09e800efea34febce89336a541e4

05 Affected products

VendorProductVersionsPlatforms
Google LLCProtobuf< 3.15.0—

06 References

07 Fixed in

AlmaLinux 8

  • protobuf
    Fixed in 3.5.0-15.el8
  • protobuf-compiler
    Fixed in 3.5.0-15.el8
  • protobuf-devel
    Fixed in 3.5.0-15.el8
  • protobuf-lite
    Fixed in 3.5.0-15.el8
  • protobuf-lite-devel
    Fixed in 3.5.0-15.el8
  • python3-protobuf
    Fixed in 3.5.0-15.el8

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

AlmaLinux 9

  • protobuf
    Fixed in 3.14.0-13.el9
  • protobuf-compiler
    Fixed in 3.14.0-13.el9
  • protobuf-devel
    Fixed in 3.14.0-13.el9
  • protobuf-lite
    Fixed in 3.14.0-13.el9
  • protobuf-lite-devel
    Fixed in 3.14.0-13.el9
  • python3-protobuf
    Fixed in 3.14.0-13.el9

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 8

  • protobuf
    Fixed in 3.5.0-15.el8
  • protobuf-compiler
    Fixed in 3.5.0-15.el8
  • protobuf-devel
    Fixed in 3.5.0-15.el8
  • protobuf-lite
    Fixed in 3.5.0-15.el8
  • protobuf-lite-devel
    Fixed in 3.5.0-15.el8
  • python3-protobuf
    Fixed in 3.5.0-15.el8

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 9

  • protobuf
    Fixed in 3.14.0-13.el9
  • protobuf-compiler
    Fixed in 3.14.0-13.el9
  • protobuf-devel
    Fixed in 3.14.0-13.el9
  • protobuf-lite
    Fixed in 3.14.0-13.el9
  • protobuf-lite-devel
    Fixed in 3.14.0-13.el9
  • python3-protobuf
    Fixed in 3.14.0-13.el9

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • protobuf
    Fixed in 3.21.9-3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • protobuf
    Fixed in 3.21.9-3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • protobuf
    Fixed in 3.21.9-3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • protobuf
    Fixed in 3.0.0-9.1ubuntu1.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • protobuf
    Fixed in 3.6.1.3-2ubuntu5.2

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • protobuf
    Fixed in 3.12.4-1ubuntu7.22.04.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

  • protobuf
    Fixed in 2.5.0-9ubuntu1+esm1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • protobuf
    Fixed in 2.6.1-1.3ubuntu0.1~esm1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.