9.1

CVE-2026-41677: rust-openssl_project rust-openssl Out-of-bounds Read

CVSS: 9.1v3.1CriticalAnalyzed
AliasesUBUNTU-CVE-2026-41677DEBIAN-CVE-2026-41677CGA-32g8-xq6r-cp74
Published 24-04-2026Last modified 24-04-2026
Open JSON

Vulnerability summary

CVE-2026-41677 is a critical (CVSS 9.1) Out-of-bounds Read vulnerability in rust-openssl_project rust-openssl. EPSS estimates a 0.29% chance of exploitation in the next 30 days, higher than 20.6% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v3.1 (NVD)
EPSS score
0.29%
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 57 · Related 58
OPENSUSE-SU-2026:11210-1OPENSUSE-SU-2026:11222-1OPENSUSE-SU-2026:11223-1OPENSUSE-SU-2026:11224-1OPENSUSE-SU-2026:11255-1OPENSUSE-SU-2026:11262-1

Timeline

  1. 24-04-2026
    PublishedVulnerability first disclosed.
  2. 24-04-2026
    Last modifiedVulnerability information updated.

Description

rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.9.0 to before 0.10.78, the *_from_pem_callback APIs did not validate the length returned by the user's callback. A password callback that returns a value larger than the buffer it was given can cause some versions of OpenSSL to over-read this buffer. OpenSSL 3.x is not affected by this. This vulnerability is fixed in 0.10.78.

CVSS metrics

9 scores · 7 sources · 2 versions

EPSS trend

Probability

0.29%

Chance of exploitation in the next 30 days

Percentile

21%

Versus all other CVEs

30-day change

0.00 pp

From 0.29% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.29%

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

Chainguard20 products
  • bootc-binary< 1.10.0-r5
  • deno< 2.7.13-r0
  • guestproxyagent< 1.0.42-r2 | < 1.0.43-r0
  • komodo-cli< 2.1.2-r2
  • komodo-core< 2.1.2-r2
Wolfi7 products
  • deno< 2.7.13-r0
  • rpm-sequoia< 1.10.1-r10
  • rustup< 1.29.0-r5
  • sccache< 0.14.0-r4
  • sdp-identity-service< 1.3.10-r5
Crates.Io1 product
  • openssl≥ 0.9.0, < 0.10.78
Debian1 product
  • rust-opensslAll versions (No fix recorded) | < 0.10.78-1
Rust-openssl1 product
Rust-openssl_project1 product
Ubuntu1 product
  • rust-opensslAll versions (No fix recorded)

7 vendors · 32 products

References

10 links