CVE-2019-15026: memcached Out-of-bounds Read
Vulnerability summary
CVE-2019-15026 is a high (CVSS 7.5) Out-of-bounds Read vulnerability in memcached. EPSS estimates a 2.64% chance of exploitation in the next 30 days, higher than 85.5% of scored vulnerabilities.
Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 3% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 6 · Related 6Timeline
- 30-08-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
memcached 1.5.16, when UNIX sockets are used, has a stack-based buffer over-read in conn_to_str in memcached.c.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
2.64%
Chance of exploitation in the next 30 days
Percentile
86%
Versus all other CVEs
30-day change
No change 0.00 pp
From 2.64% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Debian1 product
- memcached< 1.5.17-1 | < 1.4.21-1.1+deb8u3
Mageia1 product
- memcached< 1.5.20-1.mga7
Memcached1 product
- memcachedEOL1.5.16
Ubuntu1 product
- memcached< 1.4.25-2ubuntu1.5 | < 1.5.6-0ubuntu1.2
4 vendors · 4 products
References
16 links- github.com/memcached/memcached/wiki/ReleaseNotes1517X Refsource CONFIRMRelease NotesThird Party AdvisoryREPORT
- github.com/memcached/memcached/commit/554b56687a19300a75ec24184746b5512580c819X Refsource CONFIRMPatchThird Party AdvisoryREPORT
