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CVE-2020-10255

23
FAUCET Score

CVE-2020-10255, known as TRRespass, is a RowHammer vulnerability affecting modern DDR4 and LPDDR4 DRAM chips manufactured by SK Hynix, Micron, and Samsung. It exploits weaknesses in the Target Row Refresh (TRR) mitigation, allowing attackers to induce bit flips through specific memory access patterns. This critical vulnerability (CVSS 9.0) can lead to privilege escalation against kernels or Sudo, and cross-tenant VM access by corrupting RSA keys, despite requiring high attack complexity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this issue.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:h:micron:ddr4_sdram:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:h:micron:lpddr4:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:h:samsung:ddr4:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:h:samsung:lpddr4:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:h:skhynix:ddr4_sdram:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.0CRITICAL

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.58%
Probability of exploitation in next 30 days
EPSS Percentile
83.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0258 is in the 79th percentile among its peer group of 200 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.4 Reddit, 1.2 Bluesky, 0.8 Mastodon, and 2.3 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.8 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2020-10255Important

hw: dram: circumvent TRR to induce bit flips via Rowhammer

Mar 10, 2020

References

download.vusec.net / papers/trrespass_sp20.pdf
Third Party Advisory
github.com / vusec/trrespass
Product
thehackernews.com / 2020/03/rowhammer-vulnerability-ddr4-dram.html
Third Party Advisory
twitter.com / antumbral/status/1237425959407513600
Third Party Advisory
twitter.com / vu5ec/status/1237399112590467072
Third Party Advisory
vusec.net / projects/trrespass
Third Party Advisory