CVE-2026-7837: netatalk
CVSS: 3.7v3.1LowDeferred
AliasesUBUNTU-CVE-2026-7837DEBIAN-CVE-2026-7837
Published 21-05-2026Last modified 21-05-2026
Vulnerability summary
CVE-2026-7837 is a low (CVSS 3.7) vulnerability in netatalk. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 17.6% of scored vulnerabilities.
CVSS score
3.7/10
010
Low · v3.1 (CVE.org)EPSS score
0.27%
0%100%
Low · +0.03 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 21-05-2026PublishedVulnerability first disclosed.
- 21-05-2026Last modifiedVulnerability information updated.
Description
A time-of-check time-of-use (TOCTOU) condition in the ad_flush function in Netatalk 3.0.0 through 4.4.2 involves root-privileged file operations, which may allow a remote attacker to cause limited data modification under specific race conditions.
CVSS metrics
4 scores · 4 sources · 1 versionLow 3.7Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:NSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated3.7LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
- OSV · DebianEcosystem advisory · calculated3.7LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
- NVDNIST3.7LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS trend
Probability
0.27%
Chance of exploitation in the next 30 days
Percentile
18%
Versus all other CVEs
30-day change
+0.03 pp
From 0.24% on 19-09-2026
19-09-202619-10-2026
EPSS score0.27%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian1 product
- netatalkAll versions (No fix recorded) | < 4.5.0~ds-1
Netatalk1 product
- netatalk≥ 3.0.0, ≤ 4.4.2
Ubuntu1 product
- netatalkAll versions (No fix recorded)
3 vendors · 3 products
