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CVE-2026-45784· NVD / CVE Program· CNA GitHub_M

rust-openssl: Potential out-of-bounds write in `CipherCtxRef::cipher_update_inplace` for AES-KW-PAD ciphers

Noroxi assessment

Priority: Monitor (action score 20/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.13% (FIRST EPSS).
  • Someone with local access to the system can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: rust-openssl rust-openssl 0.10.80.

Low priority for now. Upgrade to rust-openssl rust-openssl 0.10.80 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.10.50 until 0.10.80, CipherCtxRef::cipher_update_inplace in openssl/src/cipher_ctx.rs incorrectly sized output buffers when used with AES key-wrap-with-padding ciphers EVP_aes_{128,192,256}_wrap_pad. For a non-multiple-of-8 input, OpenSSL writes up to 7 bytes past the end of the caller's buffer or Vec, producing attacker-controllable heap corruption when the plaintext length is attacker-influenced. This issue is fixed in version 0.10.80.

MediumCVSS 5.1 · v4.0—No exploit Fix available
Published
Jul 17, 2026
Updated
Jul 29, 2026
EPSS
0.1% · 2th percentile

Report tools

JSON

Action score

20

Monitor

Low priority for now.

CVSS
20 / 40 · 5.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · GitHub_M
5.1
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-45784

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
sfackleropenssl

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • sfackler openssl0.10.50 and later · before 0.10.80

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • rust-openssl rust-openssl

    • >= 0.10.50, < 0.10.80affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
crates.ioopensslfrom 0.10.50 · before 0.10.800.10.80
Debian:13rust-opensslall versions—
Debian:14rust-opensslbefore 0.10.81-10.10.81-1
openSUSE:Leap 16.0afterburnbefore 5.10.0.git73.b97f772-160000.1.15.10.0.git73.b97f772-160000.1.1
openSUSE:Leap 16.0agamabefore 17+647.daf9950fc-160000.12.117+647.daf9950fc-160000.12.1
openSUSE:Leap 16.0aws-nitro-enclaves-clibefore 1.4.5~git0.18a5f6f-160000.1.11.4.5~git0.18a5f6f-160000.1.1
openSUSE:Leap 16.0himmelblaubefore 2.3.14+git0.e23b4c54-160000.1.12.3.14+git0.e23b4c54-160000.1.1
openSUSE:Leap 16.0python-cryptographybefore 44.0.3-160000.4.144.0.3-160000.4.1
openSUSE:Leap 16.0python-maturinbefore 1.8.7-160000.5.11.8.7-160000.5.1
openSUSE:Leap 16.0rust-keylimebefore 0.2.9+49-160000.1.10.2.9+49-160000.1.1
openSUSE:Leap 16.0rustupbefore 1.29.1~0-160000.1.11.29.1~0-160000.1.1
openSUSE:Leap 16.0sccachebefore 0.18.0~2-160000.1.10.18.0~2-160000.1.1
openSUSE:Leap 16.0sdbootutilbefore 1+git20260908.c641fc2-160000.1.11+git20260908.c641fc2-160000.1.1
openSUSE:Leap 16.0snpguestbefore 0.10.0-160000.2.10.10.0-160000.2.1
openSUSE:Leap 16.0snphostbefore 0.6.0-160000.3.10.6.0-160000.3.1
openSUSE:Tumbleweedafterburnbefore 5.10.0.git73.b97f772-1.15.10.0.git73.b97f772-1.1
openSUSE:Tumbleweedagamabefore 22+398.d23cf880d-49.122+398.d23cf880d-49.1
openSUSE:Tumbleweedaws-nitro-enclaves-clibefore 1.4.5~git0.18a5f6f-1.11.4.5~git0.18a5f6f-1.1
openSUSE:Tumbleweedcargo-cbefore 0.10.23-1.10.10.23-1.1
openSUSE:Tumbleweedrust-keylimebefore 0.2.9+49-1.10.2.9+49-1.1
openSUSE:Tumbleweedrustupbefore 1.28.2~0-5.11.28.2~0-5.1
openSUSE:Tumbleweedsccachebefore 0.16.0~0-3.10.16.0~0-3.1
openSUSE:Tumbleweedsdbootutilbefore 1+git20260713.d869cf8-1.11+git20260713.d869cf8-1.1
openSUSE:Tumbleweedsnpguestbefore 0.10.0-3.10.10.0-3.1

+32

Same product

sfackler: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-53159The openssl crate before 0.10.55 for Rust allows an out-of-bounds read via an empty string to X509VerifyParamRef::set_host.
    13Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
rust-openssl rust-openssl0.10.80 · descriptionVendor (CNA)
crates.io:openssl0.10.80Package registry (OSV)
debian:rust-openssl0.10.81-1 · Debian:14Package registry (OSV)
opensuse:afterburn5.10.0.git73.b97f772-1.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:agama22+398.d23cf880d-49.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:aws-nitro-enclaves-cli1.4.5~git0.18a5f6f-1.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:cargo-c0.10.23-1.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:python-cryptography44.0.3-160000.4.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:python-maturin1.8.7-160000.5.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:rust-keylime0.2.9+49-1.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:rustup1.28.2~0-5.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:sccache0.16.0~0-3.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:sdbootutil1+git20260713.d869cf8-1.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:snpguest0.10.0-3.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:snphost0.7.0-3.1 · openSUSE:TumbleweedPackage registry (OSV)
suse:afterburn5.10.0.git73.b97f772-160000.1.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:agama17+647.daf9950fc-160000.12.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)
suse:aws-nitro-enclaves-cli1.4.5~git0.18a5f6f-160000.1.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)
suse:himmelblau2.3.14+git0.e23b4c54-160000.1.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)
suse:python-cryptography44.0.3-160000.4.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:python-maturin1.8.7-160000.5.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:rust-keylime0.2.9+49-160000.1.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:rustup1.28.2~0-150400.3.13.1 · SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSPackage registry (OSV)
suse:rustup1.29.1~0-160000.1.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)
suse:sccache0.16.0~0-150600.10.11.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP7Package registry (OSV)
suse:sccache0.18.0~2-160000.1.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)
suse:snpguest0.10.0-160000.2.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)
suse:snphost0.6.0-160000.3.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
X

Weakness class (CWE)

CWE-131 · Incorrect Calculation of Buffer Size

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

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References

Show all references (3 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records