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CVE-2019-15553

23
FAUCET Score

CVE-2019-15553 describes a high-severity vulnerability in the Rust memoffset crate prior to version 0.5.0, where the offset_of and span_of functions can expose uninitialized memory. With a CVSS score of 7.5, this vulnerability is remotely exploitable with low attack complexity, potentially leading to high confidentiality impacts without requiring user interaction. Despite its severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage, suggesting it is not currently a widespread threat.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.5.0CPE matchmatch criteria
cpe:2.3:a:memoffset_project:memoffset:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.75%
Probability of exploitation in next 30 days
EPSS Percentile
75.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0175 is in the 58th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

rustpatch availablevia ghsa
Product: memoffsetFixed in: 0.5.0

Vendor Advisories (1)

rustGHSA-rh89-x75f-rh3chigh

Exposure of uninitialized memory in memoffset

Aug 25, 2021

References

github.com / Gilnaa/memoffset/issues/9
Third Party Advisory
rustsec.org / advisories/RUSTSEC-2019-0011.html
Third Party Advisory