CVE-2016-1181: ActionServlet.java in Apache Struts 1 1.x through 1.3.10 mishandles multithreaded access to an ActionForm inst

This week

HIGH 8.1REMOTEWATCHLISTDOWNGRADEDOWNGRADEDOWNGRADE

CVE-2016-1181 is a high-severity flaw (CVSS 8.1) affecting banking platform, portal, struts. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ActionServlet.java in Apache Struts 1 1.x through 1.3.10 mishandles multithreaded access to an ActionForm instance, which allows remote attackers to execute arbitrary code or cause a denial of service (unexpected memory access) via a multipart request, a related issue to CVE-2015-0899.

Why this priority

High severity
EPSS top 4%: very likely to be exploited
Remotely exploitable, no login, no user action
On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	12.7% (top 4%)
CISA exploited list	No
Published	2016-07-04
Last modified	2026-10-15

Publisher (CNA): JPCERT/CC · Vendor: apache · oracle

Last updated 2026-10-15 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2016-07-04 22:59 UTCPublished CVE record published
2026-10-15 16:17 UTCUpdated Record last modified

oracle banking platform DOWNGRADE

Affected: 2.3.0 · 2.4.0 · 2.4.1 · 2.5.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.3.0

1. Check installed version

apt-cache policy banking-platform || rpm -q banking-platform || banking-platform --version

2. No fixed release: DOWNGRADE to a release before 2.3.0 (Debian / Ubuntu)

apt-cache madison banking-platform sudo apt install banking-platform=<VERSION_BEFORE_2.3.0> sudo apt-mark hold banking-platform

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list banking-platform sudo dnf downgrade banking-platform-<VERSION_BEFORE_2.3.0> sudo dnf versionlock add banking-platform

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

oracle portal DOWNGRADE

Affected: 11.1.1.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 11.1.1.6

1. Check installed version

apt-cache policy portal || rpm -q portal || portal --version

2. No fixed release: DOWNGRADE to a release before 11.1.1.6 (Debian / Ubuntu)

apt-cache madison portal sudo apt install portal=<VERSION_BEFORE_11.1.1.6> sudo apt-mark hold portal

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list portal sudo dnf downgrade portal-<VERSION_BEFORE_11.1.1.6> sudo dnf versionlock add portal

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

apache struts DOWNGRADE

Affected: 1.0 · 1.0 beta1 · 1.0 beta2 · 1.0 beta3 · 1.0.1 · 1.0.2 · 1.1 · 1.1 b1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy struts || rpm -q struts || struts --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison struts sudo apt install struts=<VERSION_BEFORE_1.0> sudo apt-mark hold struts

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list struts sudo dnf downgrade struts-<VERSION_BEFORE_1.0> sudo dnf versionlock add struts

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2016-1181?

banking platform: downgrade or apply the listed mitigation; portal: downgrade or apply the listed mitigation; struts: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2016-1181 being exploited?

CVE-2016-1181 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2016-1181 affect?

CVE-2016-1181 affects banking platform, portal, struts. Severity is high (CVSS 8.1). ActionServlet.java in Apache Struts 1 1.x through 1.3.10 mishandles multithreaded access to an ActionForm instance, which allows remote attackers to execute arbitrary code or cause a denial of service (unexpected memory access) via a multip

How urgent is CVE-2016-1181?

Priority 62/100. High severity; EPSS top 4%: very likely to be exploited; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Apache Struts vulnerabilities · Java vulnerabilities

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References

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