CVE-2025-53605: stepancheg protobuf Uncontrolled Recursion
CVSS: 5.9v3.1MediumDeferred
AliasesUBUNTU-CVE-2025-53605DEBIAN-CVE-2025-53605CGA-69wf-39rh-v373CGA-f3rr-8vhx-6qhmCGA-fp3c-c27w-88wwCGA-gg8w-2vrh-mp83CGA-pvvp-phcq-xhxpCGA-q3g5-j2cc-3gxqCGA-rwmp-8rfj-2hjwCGA-xqf3-8wcw-v3x6CGA-2jhq-567m-xpm8CGA-2v6q-79cm-c788CGA-5h34-fgcm-vpwqCGA-6q5p-r5vh-q836CGA-94vg-m7hx-qhjgCGA-cr78-gvch-wxcvCGA-g9cq-27q6-64xqCGA-h4cw-6p33-97pxCGA-mxx9-9cff-pqg4CGA-p7cr-gpfv-2362GHSA-2gh3-rmm4-6rq5RUSTSEC-2024-0437CGA-pw9r-q5f7-fvc6CGA-qcp3-2jx7-f5vxCGA-qhhx-pcv9-43r8CGA-qm6g-2v47-cwcf
Published 05-07-2025Last modified 08-07-2025
Vulnerability summary
CVE-2025-53605 is a medium (CVSS 5.9) Uncontrolled Recursion vulnerability in stepancheg protobuf. EPSS estimates a 0.47% chance of exploitation in the next 30 days, higher than 39.5% of scored vulnerabilities.
CVSS score
5.9/10
010
Medium · v3.1 (CVE.org)EPSS score
0.47%
0%100%
Low · +0.06 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 0 · Related 1Timeline
- 05-07-2025PublishedVulnerability first disclosed.
- 08-07-2025Last modifiedVulnerability information updated.
Description
The protobuf crate before 3.7.2 for Rust allows uncontrolled recursion in the protobuf::coded_input_stream::CodedInputStream::skip_group parsing of unknown fields in untrusted input.
CVSS metrics
7 scores · 7 sources · 2 versionsHigh 8.7Preferred score · OSV · Crates.io (Ecosystem advisory) · calculated from vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:USourcesSingle source
Medium 5.9Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 6 agree
- OSV · UbuntuEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · WolfiEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · ChainguardEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.47%
Chance of exploitation in the next 30 days
Percentile
40%
Versus all other CVEs
30-day change
+0.06 pp
From 0.41% on 19-09-2026
19-09-202619-10-2026
EPSS score0.47%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Chainguard10 products
- apollo-router-2.10All versions (No fix recorded)
- garage-1All versions (No fix recorded)
- garage-2All versions (No fix recorded)
- garage-2.2All versions (No fix recorded)
- parseable< 2.5.5-r0
Wolfi4 products
- parseable< 2.5.5-r0
- qdrant< 1.18.0-r0
- rust-analyzer< 20260427-r0
- yara-x< 0.13.0-r2
Crates.Io1 product
- protobuf< 3.7.2 | ≥ 0.0.0-0, < 3.7.2
Debian1 product
- rust-protobufAll versions (No fix recorded) | < 3.7.2-1
Stepancheg1 product
- protobuf< 3.7.2
Ubuntu1 product
- rust-protobufAll versions (No fix recorded)
6 vendors · 18 products
