8.2

CVE-2025-4565: google protobuf-python Uncontrolled Recursion

CVSS: 8.2v4.0HighAnalyzed
AliasesSUSE-SU-2025:02309-1SUSE-SU-2025:02310-1SUSE-SU-2025:02311-1
Published 16-06-2025Last modified 16-06-2025
Open JSON

Vulnerability summary

CVE-2025-4565 is a high (CVSS 8.2) Uncontrolled Recursion vulnerability in google protobuf-python. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 15.9% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.2/10
010
High · v4.0 (CVE.org)
EPSS score
0.26%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 7 · Related 15
OPENSUSE-SU-2026:20390-1RHSA-2026:1249SUSE-SU-2025:20672-1SUSE-SU-2026:20753-1SUSE-SU-2026:20907-1USN-7629-1

Timeline

  1. 16-06-2025
    PublishedVulnerability first disclosed.
  2. 16-06-2025
    Last modifiedVulnerability information updated.

Description

Any project that uses Protobuf Pure-Python backend to parse untrusted Protocol Buffers data containing an arbitrary number of recursive groups, recursive messages or a series of SGROUP tags can be corrupted by exceeding the Python recursion limit. This can result in a Denial of service by crashing the application with a RecursionError. We recommend upgrading to version =>6.31.1 or beyond commit 17838beda2943d08b8a9d4df5b68f5f04f26d901

CVSS metrics

9 scores · 7 sources · 2 versions

EPSS trend

Probability

0.26%

Chance of exploitation in the next 30 days

Percentile

16%

Versus all other CVEs

30-day change

0.00 pp

From 0.26% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.26%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Suse20 products
  • protobuf&distro=SUSE Linux Enterprise Micro 5.1< 3.9.2-150200.4.27.1
  • protobuf&distro=SUSE Linux Enterprise Micro 5.2< 3.9.2-150200.4.27.1
  • protobuf&distro=SUSE Linux Enterprise Micro 5.3< 25.1-150400.9.16.1 | < 3.9.2-150200.4.27.1
  • protobuf&distro=SUSE Linux Enterprise Micro 5.4< 25.1-150400.9.16.1 | < 3.9.2-150200.4.27.1
  • protobuf&distro=SUSE Linux Enterprise Micro 5.5< 25.1-150500.12.11.1 | < 3.9.2-150200.4.27.1
Chainguard19 products
  • awx< 24.6.1-r9
  • ghidra< 12.0.4-r0 | < 11.4-r0
  • kserve< 0.15.2-r2
  • kserve-agent< 0.15.2-r2
  • kserve-agent-compat< 0.15.2-r2
Wolfi10 products
  • kserve< 0.15.2-r2
  • kserve-agent< 0.15.2-r2
  • kserve-agent-compat< 0.15.2-r2
  • kserve-manager< 0.15.2-r2
  • kserve-manager-compat< 0.15.2-r2
Opensuse2 products
  • protobuf&distro=openSUSE Leap 15.6< 25.1-150600.16.13.1
  • protobuf&distro=openSUSE Tumbleweed< 31.1-1.1
Debian1 product
  • protobuf< 3.21.12-3+deb12u1 | < 3.21.12-11+deb13u1 | < 3.21.12-12
Google1 product
Protocolbuffers1 product
PyPI1 product
  • protobuf< 4.25.8 | ≥ 5.26.0rc1, < 5.29.5 | ≥ 6.30.0rc1, < 6.31.1
Ubuntu1 product
  • protobufAll versions (No fix recorded) | < 2.6.1-1.3ubuntu0.1~esm4 | < 3.0.0-9.1ubuntu1.1+esm3 | < 3.6.1.3-2ubuntu5.2+esm2 | < 3.12.4-1ubuntu7.22.04.4 | < 3.21.12-8.2ubuntu0.2

9 vendors · 56 products

References

25 links
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